BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Physics & Astronomy - ECPv6.16.3//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Physics & Astronomy X-ORIGINAL-URL:https://uwm.edu/physics X-WR-CALDESC:Events for Physics & Astronomy REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20190310T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20191103T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20200308T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20201101T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20210314T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20211107T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20220313T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20221106T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20230312T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20231105T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20240310T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20241103T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20250309T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20251102T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20260308T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20261101T070000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250404T153000 DTEND;TZID=America/Chicago:20250404T170000 DTSTAMP:20260611T171538 CREATED:20250401T144054Z LAST-MODIFIED:20250401T144054Z UID:10435346-1743780600-1743786000@uwm.edu SUMMARY:Physics Colloquium - Shaswat Sardesai DESCRIPTION:Shashwat Sardesai\, PhD Candidate\, UWM Physics \nCosmic Orchestra: The Gravitational Wave Background \nIn the last year and a half\, the North American Nanohertz Observatory for Gravitational Waves\, and their collaborators\, have detected the presence of a gravitational wave background using pulsar timing arrays. These gravitational waves likely arise from supermassive black hole binaries (SMBHBs) and have periods spanning years or decades. \nIn this talk\, I will go over the basics of PTAs\, the different methods to analyze the background\, as well as the projects I have worked on as a member of the NANOGrav collaboration to try and resolve aspects of the GWB. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-shaswat-sardesai/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250314T153000 DTEND;TZID=America/Chicago:20250314T170000 DTSTAMP:20260611T171538 CREATED:20250312T161800Z LAST-MODIFIED:20250312T161800Z UID:10435345-1741966200-1741971600@uwm.edu SUMMARY:Spring 2025 APS Preview Talks DESCRIPTION:UWM Physics Post docs\, graduate student\, and faculty \nSpring 2025 APS Preview Talks \nMembers of the UWM Physics department will present their preview talks in preparation for the upcoming APS meetings \nThe event flyer is available here. URL:https://uwm.edu/physics/event/spring-2025-aps-preview-talks/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250228T153000 DTEND;TZID=America/Chicago:20250228T170000 DTSTAMP:20260611T171538 CREATED:20250225T151409Z LAST-MODIFIED:20250227T162945Z UID:10435344-1740756600-1740762000@uwm.edu SUMMARY:Physics Colloquium - David Hogg DESCRIPTION:David Hogg\, Professor of Physics & Data Science\, NYU \nSailing as Momentum Transport \nSailboats represent an ancient (but newly relevant) sustainable form of transportation. They work off the relative velocity between the air and the water. Sailboats can sail upwind (by tacking)\, they can sail downwind faster than the wind (also by tacking)\, and they can sail crosswind much faster than the wind. \nI present the simplest possible momentum transport model of a sailboat\, and explain all of these capabilities. In this (spherical scow) model\, the sailboat is defined by three dimensionless numbers: the sail-to-keel area ratio\, a lift ratio for the sail\, and a lift ratio for the keel. The model makes a number of amusing “predictions” that explain the properties of commercial and competitive sailboats. There are many connections to sustainable energy. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-david-hogg/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250221T153000 DTEND;TZID=America/Chicago:20250221T170000 DTSTAMP:20260611T171538 CREATED:20250206T135847Z LAST-MODIFIED:20250218T185503Z UID:10435343-1740151800-1740157200@uwm.edu SUMMARY:Physics Colloquium - Geoffrey Bower DESCRIPTION:Geoffrey Bower\, Chief Scientist for Hawaii Operations\, Academia Sinica Institute of Astronomy and Astrophysics\, Project Scientist\, Event Horizon Telescope Collaboration\, Affiliate Graduate Faculty\, University of Hawaii-Manoa\, Dept. of Physics and Astronomy \nImaging Black Holes with the Event Horizon Telescope \nThe Event Horizon Telescope (EHT) is a global submillimeter-wavelength very long baseline array that produces the highest angular resolution images of black holes. The EHT Collaboration has produced images of two black holes\, the supermassive black hole in the elliptical galaxy M87 and the Galactic Center black hole\, Sgr A*. \nIn this talk\, I will describe the techniques and technology behind these measurements\, give updates on the latest results\, and plans for future observations. Images of both sources have a ring-like morphology consistent with predictions of general relativity and the Kerr metric. Comparison with an unprecedented library of GRMHD simulations provides insights on the accretion and outflow properties. These results confirm that the gravitational lensing feature is a universal property of black holes\, establishes the consistency of general relativity over three orders of magnitude in mass\, and opens the door for future tests of gravitational physics\, accretion\, and jet formation. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-geoffrey-bower/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241213T153000 DTEND;TZID=America/Chicago:20241213T170000 DTSTAMP:20260611T171538 CREATED:20241126T135817Z LAST-MODIFIED:20241126T212334Z UID:10435341-1734103800-1734109200@uwm.edu SUMMARY:Physics Colloquium - Scott Hertel DESCRIPTION:Scott Hertel\, Assoc. Professor\, Dept. of Physics\, University of Massachusetts-Amherst \nRecent Progress Towards the Detection of Dark Matter \nAs you read this\, you are immersed in a bath of particles beyond the Standard Model\, so-called ‘dark matter’ particles which are noticed only through their gravitational effects at astrophysical scales. Discovering the properties of these unseen particles (their mass\, interactions with other particles\, etc.) is one of the great challenges of 21st century physics. \nI will describe two complementary efforts which search for individual dark matter particles in a laboratory setting here on earth: LZ and TESSERACT. Each effort search Centeres for the individual scatters of galactic dark matter particles with atoms here on earth\, and each effort requires the development of novel and interesting technologies. I will update you on our progress towards unraveling this great mystery of physics. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-scott-hertel/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241206T153000 DTEND;TZID=America/Chicago:20241206T170000 DTSTAMP:20260611T171538 CREATED:20241126T221025Z LAST-MODIFIED:20241126T221025Z UID:10435342-1733499000-1733504400@uwm.edu SUMMARY:Physics Colloquium - Professor Scott A. Hughes DESCRIPTION:Professor Scott A. Hughes\, Dept. of Physics & the Kavli Institute\, MIT \nHigh-precision Waveforms with the Small-mass-ratio Limit \nCurrent gravitational-wave detectors are being upgraded\, and plans are developing for future detectors with greater sensitivity over broader frequency bands. As instruments improve and develop\, more cycles of sources’ gravitational waveforms will be measured with greater signal to noise ratio. Such higher fidelity measurements promise to teach us more about their sources and the nature of strong-field gravity — but only if theoretical modeling of these waves is able to match advances in the detectors. As we measure waveforms with better precision\, the likelihood increases that systematic modeling errors will affect inferences about what we measure. \nIn this talk\, I will survey recent progress modeling waveforms from small-mass binaries. Such binaries\, which exactly describe important low-frequency gravitational wave sources\, also serve as a limit of the more general binary problem that can be modeled with very high precision. I will discuss the outstanding progress that has been made on this problem in recent years\, and how what we learn in this limit can be combined with other binary modeling techniques to advance modeling for relativistic binaries in general. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-professor-scott-a-hughes/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241122T153000 DTEND;TZID=America/Chicago:20241122T170000 DTSTAMP:20260611T171538 CREATED:20241119T202729Z LAST-MODIFIED:20241119T202729Z UID:10435340-1732289400-1732294800@uwm.edu SUMMARY:Physics Colloquium - Dr. Joshua "Shua" Sanchez DESCRIPTION:Dr. Joshua “Shua” Sanchez\, Postdoctoral Fellow\, Department of Physics\, MIT \nQuantum Criticality and Magnetic Field-Induced Superconductivity \nWhen electrons have strong interactions with each other\, new quantum phases of matter emerge\, such as magnetism\, nematicity\, charge order\, and superconductivity. In these “Quantum Materials”\, the microscopic interactions can be very difficult to probe and understand\, yet they give rise to macroscopic properties that are easier to study and can be harnessed for new technologies. \nIn this talk\, I will demonstrate how synchrotron x-ray techniques can be powerful probes to study the mysterious origin of strongly-correlated phases. I will discuss several recent projects at the Advanced Photon Source at Argonne National Laboratory\, using a novel sample characterization platform that simultaneously combines x-rays\, in-situ structural tuning\, applied magnetic field\, and electrical transport measurements. Our work yields new insights on two broad questions in high-temperature iron-based superconductors. (1) How does quantum criticality and nematicity relate to unconventional superconductivity? and (2) How can ferromagnetism and superconductivity coexist in one material\, and how do they affect each other? \nReferences:\n(1) Sanchez\, et al. Nature Materials 20\, 1519–1524 (2021)\n(2) Sanchez\, et al. Science Advances 9\, eadj5200 (2023) \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-dr-joshua-shua-sanchez/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241018T153000 DTEND;TZID=America/Chicago:20241018T170000 DTSTAMP:20260611T171538 CREATED:20241007T125538Z LAST-MODIFIED:20241007T125538Z UID:10435339-1729265400-1729270800@uwm.edu SUMMARY:Physics Colloquium - Catalin Picu DESCRIPTION:Catalin Picu\, Dept. of Mechanical\, Aerospace & Nuclear Engineering\, Rensselaer Polytechnic Institute \nSoft Network Materials: Structure-Properties Relations \nMany materials have a stochastic network of filaments as their main structural component and are referred to collectively as ‘network materials.’ This class includes all biological connective tissue\, the extracellular matrix\, the intra-cellular cytoskeleton\, paper and cellulose-based products\, nonwovens\, as well as various molecular networks such as rubber\, gels and thermosets. \nThis talk reviews the relation between the structure of athermal networks and the material-scale mechanical properties\, focusing on identifying commonalities between these very diverse material systems. Properties of interest include the non-linear elastic response\, the viscoelastic response\, strength and toughness. The effect of inter-fiber adhesion on network mechanics will be also discussed. The talk provides a comprehensive overview of the mechanics of this broad class of materials. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-catalin-picu/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20241011T153000 DTEND;TZID=America/Chicago:20241011T170000 DTSTAMP:20260611T171538 CREATED:20241003T125926Z LAST-MODIFIED:20241003T125926Z UID:10435338-1728660600-1728666000@uwm.edu SUMMARY:Physics Colloquium - Hongbin Li DESCRIPTION:Hongbin Li\, Professor\, Department of Chemistry\, The University of British Columbia \nRational Engineering of Protein-based Biomaterials: from single molecule traits to functional material properties \nIn their biological settings\, elastomeric proteins function as molecular springs\, thereby establishing elastic connections\, plus providing mechanical strength and elasticity. With an ability to change their shape (evolving from simple\, random coil-like structures to a more sophisticated beads-on-a string formation)\, they fulfill their biological function. These complex protein polymers exhibit distinct mechanical properties. \nThe development of single molecule force spectroscopy techniques has made it possible to directly probe these properties\, at the single molecule level\, allowing us to understand their molecular design principles. This knowledge has enabled us to engineer novel elastomeric proteins to achieve tailored and well-defined nanomechanical properties. \nIn this talk\, specific examples will be given on engineering protein hydrogels to mimic the passive elastic properties of muscle\, as well as highly stiff and highly tough protein biomaterials to mimic the mechanical properties of cartilage. These studies will pave the way to utilizing proteins as building blocks to engineer new generations of protein-based biomaterials for diverse applications in biomedical engineering as well as material sciences. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-hongbin-li/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240503T153000 DTEND;TZID=America/Chicago:20240503T170000 DTSTAMP:20260611T171538 CREATED:20240301T171200Z LAST-MODIFIED:20240423T152504Z UID:10435336-1714750200-1714755600@uwm.edu SUMMARY:Physics Colloquium - Segev BenZvi DESCRIPTION:Segev BenZvi\, Assoc. Professor\, Department of Physics\, University of Rochester \nMeasuring Cosmic Expansion with the Dark Energy Spectroscopic Instrument \nSince the first observations of the accelerating expansion of the universe at the end of the 1990s\, astronomers and physicists have struggled to understand dark energy\, a mysterious repulsive force that drives the acceleration. A number of models of dark energy exist. The simplest (the cosmological constant)\, assumes dark energy is non-interacting and is the same everywhere in space and time. Different models predict subtely different features in the large-scale structure of the universe. We are now entering an era of new photometric and spectroscopic surveys which can discriminate different models of dark energy with unprecedented precision. \nIn this talk\, I will present the latest results from the Dark Energy Spectroscopic Instrument (DESI)\, a fiber-fed\, robotically-actuated galaxy redshift survey that has been in operation at Kitt Peak National Observatory since mid-2021. In April 2024\, the DESI Collaboration released its results from the first year of data taking. I will describe the performance of DESI\, summarize the first year of data and our cosmological analyses\, and present prospects for future results. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-segev-benzvi/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240426T153000 DTEND;TZID=America/Chicago:20240426T170000 DTSTAMP:20260611T171538 CREATED:20240301T171028Z LAST-MODIFIED:20240426T125548Z UID:10435335-1714145400-1714150800@uwm.edu SUMMARY:Physics Colloquium - Rob Pisarski DESCRIPTION:Rob Pisarski\, Distinguished Scientist\, Department of Physics\, Brookhaven National Laboratory \nThe Ugly Duckling and the Swan: The Quark-Gluon Plasma and Heavy Ion Collision \nI give a pedagogical and historical overview of the search for the Quark-Gluon plasma (QGP) in the collisions of heavy ions. I begin with a brief review of why we expect a QGP to be formed at high temperature. In this\, numerical simulations in lattice Quantum ChromoDynamics (QCD) form the bedrock of the field. In particular\, they demonstrate the relationship between deconfinement and the restoration of chiral symmetry. \nAt the SPS at CERN\, I discuss the suppression of J/Psi mesons\, and the excess of dileptons below the rho meson. Bjorken first noticed that a “plateau” may emerge at high energies\, and produce a regime at high temperature\, and low chemical potential. At colliders such as RHIC\, at Brookhaven\, and the LHC\, at CERN\, I discuss two notable signals: the utility of nearly ideal hydrodynamics\, and jet quenching. The new frontier is going down to moderate collision energies\, which there is net excess of baryons. Possible phenomena in this region include a critical end point and moat regimes. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-rob-pisarski/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240419T153000 DTEND;TZID=America/Chicago:20240419T170000 DTSTAMP:20260611T171538 CREATED:20240301T170912Z LAST-MODIFIED:20240412T134014Z UID:10435334-1713540600-1713546000@uwm.edu SUMMARY:Physics Colloquium - Joel Nowitzke DESCRIPTION:Joel Nowitzke\, PhD Candidate\, UW-Milwaukee \nModeling and Measurements of Network Formation and Viscoelastic Behavior of Folded Protein-Based Hydrogels \nProteins are vital for various daily functions and are even used in creating biocompatible materials through chemical crosslinking. However\, predicting the mechanical properties of these materials is challenging due to the random orientation of constituent molecules within the network. Bridging the gap between nanoscopic and macroscopic scales is essential for formulating predictable biomaterials. Through a combination of experimental methods and computational simulations\, including Single Molecule Magnetic Tweezers and Steered Molecular Dynamics Simulations\, we aim to understand these properties. This approach involves determining the relative stability of pulling geometries and simulating protein unfolding to create accurate models. By subjecting simulated networks to external stress\, we assess their behavior compared to experimental data\, ensuring realistic predictions. \nThe event flyer is available for download here. URL:https://uwm.edu/physics/event/physics-colloquium-joel-nowitzke/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240405T153000 DTEND;TZID=America/Chicago:20240405T170000 DTSTAMP:20260611T171538 CREATED:20240301T170802Z LAST-MODIFIED:20240312T171812Z UID:10435333-1712331000-1712336400@uwm.edu SUMMARY:Physics Colloquium - Marcus Noack DESCRIPTION:Dr. Marcus Noack\, Research Scientist\, Lawrence Berkeley National Lab \nNext-Generation Gaussian Processes for Function Approximation\, Uncertainty Quantification\, and Decision-Making \nGaussian processes (GPs) and Gaussian-related stochastic processes are powerful tools for function approximation\, uncertainty quantification\, global optimization\, and autonomous data acquisition due to their robustness\, analytical tractability\, and natural inclusion of Bayesian uncertainty estimates. Even so\, Gaussian processes are often criticized for poor approximation performance and neck-breaking computational costs in real-life applications. The reason for this gap\, however\, is not the methodology itself but rather a user-caused lack of flexibility and domain awareness of the underlying prior probability distribution. \nIn this talk\, I address many challenges of GPs that might inhibit optimal performance. We will discover hands-on solutions and tools that make implementation easy. The key takeaway for the audience will be a better understanding of Gaussian processes and ways to customize them for optimal performance. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-marcus-noack/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240329T153000 DTEND;TZID=America/Chicago:20240329T170000 DTSTAMP:20260611T171538 CREATED:20240311T212140Z LAST-MODIFIED:20240311T212140Z UID:10435337-1711726200-1711731600@uwm.edu SUMMARY:Physics Colloquium - Gabor Csathy DESCRIPTION:Professor Gabor Csathy\, Department of Physics and Astronomy\, Purdue University \nEmergent Particles and Topology in Flat Landau Bands \nElectronic systems with flat energy bands support a variety of topological phases of current interest. The two-dimensional electron gas in the fractional quantum Hall regime is such a system. Ground states of this system found an elegant description in terms of emergent particles called composite fermions. \nIn this talk we review the topological ground states and some of their basic properties and discuss two recent discoveries: fractional quantum Hall states associated with flux-six composite fermions and a bubble phase of composite fermions. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-gabor-csathy/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240308T153000 DTEND;TZID=America/Chicago:20240308T170000 DTSTAMP:20260611T171538 CREATED:20240226T180637Z LAST-MODIFIED:20240228T194456Z UID:10435332-1709911800-1709917200@uwm.edu SUMMARY:Physics Colloquium - Alan Wiseman DESCRIPTION:The Self-force on Static and Dynamic Charges in Schwarzschild Spacetime Using the Method of Images \nAlan Wiseman\, Assoc. Professor\, Dept. of Physics\, UW-Milwaukee\nOne of the most basic examples of a self-force phenomenon (sometimes called the radiation reaction force) is that of a small\, charged particle near a large spherical mass such as a Schwarzschild black hole. If the particle is held stationary\, there are novel electrostatic forces on the particle. If the particle is orbiting the mass\, the fields created by the particle back-react on the particle and cause it to depart from its otherwise free-fall motion. There are many ways to solve for the forces and motion in these circumstances\, but past solutions have involved considerable technical machinery\, and the results are messy and “non-intuitive”. \nI will take a fundamentally new approach to this problem using the method of image charges. This approach makes the origin of the forces easier to visualize. In the talk\, I will make a clear analogy between this new work and that of familiar examples of the method of images in electrostatics. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-alan-wiseman/ LOCATION:Lapham 162\, 3209 N. Maryland Ave.\, Milwaukee\, 53211 CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0757204;-87.8840564 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 162 3209 N. Maryland Ave. Milwaukee 53211;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240301T153000 DTEND;TZID=America/Chicago:20240301T163000 DTSTAMP:20260611T171538 CREATED:20240220T150216Z LAST-MODIFIED:20240220T150216Z UID:10435331-1709307000-1709310600@uwm.edu SUMMARY:Physics Colloquium - Sarah Vigeland DESCRIPTION:Searching for a Gravitational Wave Background with Pulsar Timing Arrays \nSarah Vigeland\, Asst. Professor\, Dept. of Physics\, UW-Milwaukee\nPulsar timing arrays use observations of millisecond pulsars to detect nanohertz gravitational waves. The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) Collaboration has recently released their 15-year data set containing observations of 68 millisecond pulsars. These data contain evidence for Hellings-Downs correlations\, which are characteristic of a gravitational wave background. \nIn this talk\, I will present these results\, and discuss the spectral properties of the signal and implications for the astrophysical source. I will also discuss prospects for detecting other types of gravitational wave sources with pulsar timing arrays\, including individual supermassive binary black holes. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-sarah-vigeland/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20240223T153000 DTEND;TZID=America/Chicago:20240223T170000 DTSTAMP:20260611T171538 CREATED:20240208T135341Z LAST-MODIFIED:20240220T150248Z UID:10435330-1708702200-1708707600@uwm.edu SUMMARY:Physics Colloquium - Helvi Witek DESCRIPTION:CSI Gravity: Investigating Mysteries of Fundamental Physics with Black Holes \nDr. Helvi Witek\, Asst. Professor\, Dept. of Physics\, UIUC\nBlack holes are among the most exciting predictions of Einstein’s theory of general relativity\, composed of the fabric of spacetime itself. Observations of black holes offer unique access to extreme gravity\, and they enable us to investigate long-standing puzzles in fundamental physics ranging from dark matter to the very nature of gravity itself. \nIn my presentation\, I will first provide an overview of recent black hole observations\, including gravitational wave detections. I will then discuss how we produce theoretical models of black hole mergers and gravitational waves using numerical relativity\, that are needed to correctly interpret the observations. I will conclude with a taster on how we can use numerical relativity simulations to learn about the nature of gravity or new (axionlike) particles. \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-helvi-witek/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20231201T150000 DTEND;TZID=America/Chicago:20231201T170000 DTSTAMP:20260611T171538 CREATED:20231101T202803Z LAST-MODIFIED:20231130T211039Z UID:10435329-1701442800-1701450000@uwm.edu SUMMARY:Physics Colloquium - Francis Halzen DESCRIPTION:IceCube: Opening a Neutrino Window on the Universe from the South Pole \nProfessor Francis Halzen\, Professor and Director of IceCube\, Department of Physics\, University of Wisconsin-Madison \nBelow the geographic South Pole\, the IceCube project has transformed one cubic kilometer of natural Antarctic ice into a neutrino detector. IceCube detects more than 100\,000 neutrinos per year in the GeV to 10 PeV energy range. From those\, we have isolated a flux of high-energy neutrinos originating beyond our Galaxy\, with an energy flux that is comparable to that of the extragalactic high-energy photon flux observed by the NASA Fermi satellite. With a decade of data\, we have identified their first sources\, which point to the obscured dense cores associated with the supermassive black holes of some active galaxies as the origin of high-energy neutrinos (and cosmic rays!). \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-professor-francis-halzen/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20231117T150000 DTEND;TZID=America/Chicago:20231117T170000 DTSTAMP:20260611T171538 CREATED:20231101T202535Z LAST-MODIFIED:20231101T202535Z UID:10435328-1700233200-1700240400@uwm.edu SUMMARY:Physics Colloquium - Roshanak Etemadpour DESCRIPTION:Roshanak Etemadpour\, Ph. D. candidate\, Department of Physics\, University of Wisconsin-Milwaukee \nThe title and abstract for this talk will be posted when made available. URL:https://uwm.edu/physics/event/physics-colloquium-roshanak-etemadpour/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20231110T153000 DTEND;TZID=America/Chicago:20231110T163000 DTSTAMP:20260611T171538 CREATED:20231101T202041Z LAST-MODIFIED:20231103T205221Z UID:10435327-1699630200-1699633800@uwm.edu SUMMARY:Physics Colloquium - Min Gyu Kim DESCRIPTION:Assistant Professor Min Gyu Kim\, UWM Department of Physics \nHow to See Antiferromagnetic Domains and Domain Walls \nIn this talk\, I will introduce myself and discuss my journey as an experimental condensed matter physicist\, explaining the field briefly. I will then focus on my recent research activities and interests\, specifically on imaging antiferromagnetic domains and domain walls. \nMagnetic domains play a fundamental role in the physics of magnetism\, and their manipulation can be achieved through domain wall (DW) propagation. The discovery of electric-field-driven switching of antiferromagnetic (AFM) spin arrangement has reignited interest in the field of spintronics using antiferromagnets. Despite the potential of antiferromagnetic materials for use in future electronic devices\, the dynamics of antiferromagnetic domain walls are poorly understood due in large part to the lack of techniques for visualizing AFM DWs. In this presentation\, I will introduce a recently developed coherent X-ray imaging technique\, a diffraction-based full-field imaging method that produces real-time\, direct space images. With this technique\, we can study fluctuating micrometer-scale antiferromagnetic domains on timescales from 10-2 to 103 sec.\, with the potential to improve the resolution to ~ 10-11 sec. in the future. \nThe event flyer can be downloaded here. URL:https://uwm.edu/physics/event/physics-colloquium-min-gyu-kim/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20230503T153000 DTEND;TZID=America/Chicago:20230503T163000 DTSTAMP:20260611T171538 CREATED:20230417T220007Z LAST-MODIFIED:20230421T131743Z UID:10435326-1683127800-1683131400@uwm.edu SUMMARY:Physics Colloquium - Ben Owen DESCRIPTION:Professor Ben Owen\, Department of Physics & Astronomy\, Texas Tech University \nMulti-messenger Astrophysics from LIGO to Cosmic Explorer \nLIGO’s detections of gravitational waves from binary mergers made history and yielded insights into extreme gravity and matter. With more detections\, unusual mergers will yield ever more information on new populations. What other gravitational wave signals will be detected\, from LIGO to Cosmic Explorer? What physics and astrophysics will we learn from them\, especially in tandem with new and planned electromagnetic astronomy facilities? \nI summarize some highlights from detections of binary mergers in LIGO data and from current searches for other signals\, and sketch the exciting frontiers of what could be learned with future searches ranging from the next year to the era of Cosmic Explorer. \nThe event flyer is available for download here URL:https://uwm.edu/physics/event/physics-colloquium-ben-owen/ LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0757204;-87.8840564 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20230428T153000 DTEND;TZID=America/Chicago:20230428T163000 DTSTAMP:20260611T171538 CREATED:20230213T192500Z LAST-MODIFIED:20230405T151617Z UID:10435321-1682695800-1682699400@uwm.edu SUMMARY:Physics Colloquium - Dr. Horia Petrache DESCRIPTION:Dr. Horia Petrach\, Department of Physics\, Indiana & Purdue Universities \nInteractions of Neuromodulators with Model Lipid Membranes \nNeurotransmitters and neuromodulators typically function by binding to specialized receptors in neuronal membranes. In this work\, we study two different neurotransmitters that also function as neuromodulators\, namely dopamine (DA) and adenosine triphosphate (ATP). Dopamine is best known as the feel-pleasure hormone while ATP is best known for being the source of energy in the cell. Using a combination of scattering and spectroscopic methods\, we show that both DA and ATP have an affinity to lipid membranes lacking specialized receptors. In particular\, by x-ray scattering and NMR spectroscopy we show that both DA and ATP interact with lipid headgroups at the membrane-water interface. As a consequence\, the membrane surface potential is modified as measured by Dynamic Light Scattering. Our results can contribute to understanding the role of lipid membranes in neuromodulation. \nThe event flyer is available for download here. URL:https://uwm.edu/physics/event/physics-colloquium-dr-horia-petrache/ LOCATION:WI CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20230317T153000 DTEND;TZID=America/Chicago:20230317T163000 DTSTAMP:20260611T171538 CREATED:20230127T204607Z LAST-MODIFIED:20230207T154836Z UID:10435317-1679067000-1679070600@uwm.edu SUMMARY:Physics Colloquium - Pierre-Alexandre Gourdain DESCRIPTION:Pierre-Alexandre Gourdain\, University of Rochester \nThe Impact of Electron Physics in High Energy Density Plasmas \nThe study of high energy density plasmas (HEDP) allows researchers to study the impact of microscopic phenomena on macroscopic scales by using plasmas dense enough to be probed by high energy photons (i.e. visible\, UV\, X-ray). This probe allows us to use readily available detectors to make precise\, two-dimensional measurements of the electron density and infer the electron flow speed and magnetic field. \nIn this talk\, I will highlight how electron physics can shed some light on how long-range interactions can create macroscopic behavior\, such as collision-less shocks and particle acceleration\, but also how it can be used to test statistical integral operators that can capture more exotic phenomena than simple hard-sphere collisions\, which yield Gaussian distributions. \nThe event flyer may be downloaded here URL:https://uwm.edu/physics/event/physics-colloquium-pierre-alexandre-gourdain/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20230310T153000 DTEND;TZID=America/Chicago:20230310T163000 DTSTAMP:20260611T171538 CREATED:20230127T204433Z LAST-MODIFIED:20230227T173154Z UID:10435316-1678462200-1678465800@uwm.edu SUMMARY:Physics Colloquium - Daniel Vrinceanu DESCRIPTION:Daniel Vrinceanu\, Texas Southern University \nRadiative Cascade in Rydberg Atoms \nThis talk is an introduction to the physics of Rydberg atoms. The two complementary flavors of Rydberg atoms\, high and low angular momentum states\, have contrasting properties as they relate to the correspondence principle that bridges classical behavior to quantum mechanics. Dynamic symmetries allow a unified point of view to investigate this correspondence. Highly excited atoms dissipate their energy in different ways depending on their initial angular momentum: low angular momentum states make transitions in large energy increments\, quickly approaching the ground state\, while high angular momentum states make small steps\, slowly spiraling towards lower states. \nThe event flyer may be downloaded here. URL:https://uwm.edu/physics/event/physics-colloquium-daniel-vrinceanu/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20211029T140000 DTEND;TZID=America/Chicago:20211029T153000 DTSTAMP:20260611T171538 CREATED:20200303T174247Z LAST-MODIFIED:20211015T151452Z UID:10390516-1635516000-1635521400@uwm.edu SUMMARY:Physics Colloquium - Mark Williamsen DESCRIPTION:Mark Williamsen\, Quantum Design\, Inc \nApplications of AC Bridges in Cryogenic Measurements \nAC (alternating current) bridges have proven to be useful in making precise measurements at low temperature\, including thermometry as well as length change with respect to either thermal expansion (dilatometry) or applied magnetic field (magnetostriction). Techniques now in use allow one leg of the bridge to be placed at the cryogenic sample site while the other legs remain at room temperature\, with the intervening temperature gradient being imposed along a length of coaxial cable. Using this method\, length change measurements at atomic scale have recently been used to study a hidden order phase in the heavy fermion system URu2Si2. Plans are now underway to apply this sensitive measurement to a variety of single crystal and polycrystalline samples. \nRelevant citing: S. Ran\, G. M. Schmiedeshoff\, N. Pouse\, I. Jeon\, N. P. Butch\, R. B. Adhikari\, C. C. Almasan & M. B. Maple; “Rapid suppression of the energy gap and the possibility of a gapless hidden order state in URu2−xRexSi2\,” Philosophical Magazine\, 99:14\, 1751-1762\, DOI: 10.1080/14786435.2019.1600756 (2019). \nThe event flyer is available here. URL:https://uwm.edu/physics/event/physics-colloquium-mark-williamsen/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20210924T150000 DTEND;TZID=America/Chicago:20210924T160000 DTSTAMP:20260611T171538 CREATED:20210921T184718Z LAST-MODIFIED:20210921T190112Z UID:10390518-1632495600-1632499200@uwm.edu SUMMARY:Physics Colloquium - Dr. Morgan Lynch DESCRIPTION:Dr. Morgan Lynch \nA Brief History of Quantum Field Theory in Curved Spacetime \nThe incorporation of classical general relativity into the framework of quantum field theory yielded a rather surprising result — thermodynamic particle production. In short\, for fundamental deformations in the structure of spacetime\, quantum mechanics necessitates the creation of thermalized particles from the vacuum. One such phenomenon\, known as the Unruh effect\, causes empty space to effervesce a thermal bath of particles when viewed by an observer undergoing uniformly accelerated motion. \nIn this presentation\, we will review the timeline of conceptual discoveries which led to broad classes of these intriguing thermodynamic phenomena. Beginning with the original discovery of particles created by the expansion of the universe\, we will cover a brief history of quantum field theory in curved spacetime\, culminating in the first experimental observation of the Unruh effect\, and other aspects of acceleration-induced thermality\, in high energy channeling radiation. \nEvent flyer is available here URL:https://uwm.edu/physics/event/physics-colloquium-dr-morgan-lynch/ LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0754962;-87.8839451 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20200508T153000 DTEND;TZID=America/Chicago:20200508T163000 DTSTAMP:20260611T171538 CREATED:20200303T174053Z LAST-MODIFIED:20200326T163253Z UID:10390513-1588951800-1588955400@uwm.edu SUMMARY:Michelle Larson: Postponed Until AY 2020/2021 DESCRIPTION:Michelle Larson\, Adler Planetarium \nTitle and abstract TBA URL:https://uwm.edu/physics/event/physics-colloquium-michelle-larson/ LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0757204;-87.8840564 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20200501T153000 DTEND;TZID=America/Chicago:20200501T163000 DTSTAMP:20260611T171538 CREATED:20200217T144849Z LAST-MODIFIED:20200326T163335Z UID:10388512-1588347000-1588350600@uwm.edu SUMMARY:Ionel Popa: Postponed Until Fall 2020 DESCRIPTION:Ionel Popa\, UWM Physics Faculty \nTitle and abstract TBA URL:https://uwm.edu/physics/event/physics-colloquium-ionel-popa/ LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0757204;-87.8840564 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20200403T153000 DTEND;TZID=America/Chicago:20200403T163000 DTSTAMP:20260611T171538 CREATED:20200217T144606Z LAST-MODIFIED:20230120T120650Z UID:10387510-1585927800-1585931400@uwm.edu SUMMARY:Physics PhD Colloquium - Deep Chatterjee DESCRIPTION:Deep Chatterjee\, University of Wisconsin-Milwaukee PhD Candidate \nTitle and abstract TBA URL:https://uwm.edu/physics/event/physics-phd-colloquium-deep-chatterjee/ LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0757204;-87.8840564 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20200306T153000 DTEND;TZID=America/Chicago:20200306T163000 DTSTAMP:20260611T171538 CREATED:20200210T220750Z LAST-MODIFIED:20200210T220750Z UID:10386508-1583508600-1583512200@uwm.edu SUMMARY:Physics Colloquium - Wynn Ho DESCRIPTION:Wynn Ho\, Haverford College \nThe Impact of Pulsar Glitches and NICER on Gravitational Wave Searches \nPulsars are the rotating remnant of massive stars and are unique probes of dense matter physics. They are famous for having very precisely measured spin rates\, and this spin evolves extremely regularly for most pulsars. However\, young pulsars can occasionally undergo sudden spin changes\, known as glitches. \nIn this talk\, I will introduce pulsar glitches and the superfluidity model of a glitch. I will then discuss how currently detected gravitational wave transients might be due to a stellar oscillation in glitching pulsars. Finally\, I will describe the NICER mission on the International Space Station and its important role in enabling gravitational wave searches through tracking the spin of young\, glitching pulsars. \nEvent flyer is available here URL:https://uwm.edu/physics/event/physics-colloquium-wynn-ho/ LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: GEO:43.0757204;-87.8840564 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204 END:VEVENT END:VCALENDAR