BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Physics & Astronomy - ECPv6.16.3//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH 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: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 BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20270314T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20271107T070000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260403T130000 DTEND;TZID=America/Chicago:20260403T140000 DTSTAMP:20260611T092910 CREATED:20260130T140830Z LAST-MODIFIED:20260401T152507Z UID:10435382-1775221200-1775224800@uwm.edu SUMMARY:CGCA Seminar - Tyler Trent DESCRIPTION:Ohana Kilo Hoku: Hawaiian Culture Based Astronomy Outreach\nTyler Trent\nUniversity of Maryland \nAstronomy in Hawaii has become highly controversial in recent years\, with construction of new telescopes on Mauna Kea drawing large protests from the local communities\, especially Native Hawaiians. As someone who was born and raised on the island of Oahu in Hawaii\, and has Native Hawaiian ancestry\, I share my perspective on the conflict and present on the work of Ohana Kilo Hoku\, a Native Hawaiian non-profit organization I am a member of. Drawing inspiration from ancient Native Hawaiian’s who used the night sky to navigate the Pacific Ocean\, we work to cultivate relationships between the youth and the science of the sky above. URL:https://uwm.edu/physics/event/cgca-seminar-tyler-trent/ LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States CATEGORIES:CGCA Seminars X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260403T153000 DTEND;TZID=America/Chicago:20260403T170000 DTSTAMP:20260611T092910 CREATED:20260212T194213Z LAST-MODIFIED:20260401T153813Z UID:10435388-1775230200-1775235600@uwm.edu SUMMARY:Physics Colloquium - Jong-Woo Kim DESCRIPTION:Studying Magnetism with Resonant X-ray Scattering at Advanced Photon Source\nJong-Woo Kim\, Physicists\nMagnetic Material Group/Advanced Photon Source\, Argonne National Laboratory \nX-ray scattering at synchrotron facilities such as the Advanced Photon Source provides a powerful platform for investigating magnetic order with element and orbital specificity. In this colloquium\, I will introduce the fundamentals of single-crystal X-ray diffraction and the principles of resonant elastic X-ray scattering (REXS)\, emphasizing how tuning to absorption edges enhances sensitivity to electronic and magnetic structures. \nI will then discuss the microscopic origin of X-ray magnetic scattering and its unique ability to probe spin\, orbital\, and multipolar order. Finally\, selected examples from complex oxides and correlated materials will illustrate how these techniques reveal emergent magnetic phenomena that are difficult to access with conventional probes. URL:https://uwm.edu/physics/event/physics-colloquium-jong-woo-kim-2/ 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:20260410T130000 DTEND;TZID=America/Chicago:20260410T140000 DTSTAMP:20260611T092910 CREATED:20260130T141047Z LAST-MODIFIED:20260408T175232Z UID:10435383-1775826000-1775829600@uwm.edu SUMMARY:CGCA Seminar - Reshma Anna Thomas DESCRIPTION:Low-Frequency Radio Transients\nReshma Anna Thomas\nNetherlands Institute for Radio Astronomy\, University of Amsterdam \nThe low-frequency radio sky (<300 MHz) remains comparatively underexplored for fast and slow transients (~ microseconds to minutes)\, primarily due to strong propagation effects as well as instrumental challenges. However\, this regime provides unique leverage on plasma environments and emission physics that are inaccessible at GHz frequencies. Fast radio bursts (FRBs) are extragalactic coherent transients with millisecond durations\, often exhibiting sub-millisecond temporal structure. I will present detections of two FRBs at 150 MHz using beamformed searches with LOFAR\, which place some of the most stringent constraints to date on free–free absorption in their local environments. In parallel\, a new class of Galactic sources\, long-period transients (LPTs)\, has recently emerged\, characterized by emission on second-to-minute durations and periodicities spanning minutes to hours. I will discuss two LPTs discovered with LOFAR interferometric imaging searches\, highlighting their phenomenology and implications for coherent emission mechanisms in their sources. These results motivate a systematic exploration of the low-frequency transient phase space. Therefore\, I will present EuroFlash\, a commensal\, real-time transient detection system for LOFAR 2.0. Operating on a dedicated compute cluster\, EuroFlash performs parallel beamforming and imaging with low latency\, enabling both discovery and localization of FRBs\, LPTs and previously unrecognized classes of radio transients across a wide range of timescales. I will summarize commissioning progress and discuss how this system opens a new region of parameter space for low-frequency radio transients. URL:https://uwm.edu/physics/event/cgca-seminar-reshma-anna-thomas/ LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States CATEGORIES:CGCA Seminars X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260410T153000 DTEND;TZID=America/Chicago:20260410T170000 DTSTAMP:20260611T092910 CREATED:20260212T194326Z LAST-MODIFIED:20260402T212116Z UID:10435389-1775835000-1775840400@uwm.edu SUMMARY:Physics Colloquium - Sarah Villanova Borges DESCRIPTION:Constraining Common Envelope Evolution Simulations with Observations\nSarah Villanova Borges\, PhD Candidate\nUniversity of Wisconsin-Milwaukee \nCommon Envelope Evolution (CEE) remains one of the biggest unresolved problems in binary stellar evolution\, despite being the primary pathway for the formation of close binary systems. One of the main challenges in understanding CEE is its intrinsically multiscale and multiphysics nature\, which makes it difficult to model with analytical or 1D models. 3D hydrodynamical simulations have therefore become essential tools for studying this phase. However\, validating these simulations requires observational constraints\, which are scarce. This lack of direct observations is another major obstacle in modeling CEE. One exception is luminous red novae\, which is believed to correspond to CEE events that culminate in stellar mergers. In contrast\, there are no confirmed direct detections of ongoing CEE events that result in the survival of a close binary. As a result\, studies must rely on observations of post-CEE systems\, such as close binaries\, planetary nebulae (PNe) and water fountains (WFs)\, to constrain both numerical simulations and analytical models. Close binaries primarily provide constraints on the final orbital separation between the stellar core and its companion\, while PNe and WFs offer insight into the morphology of the ejected envelope. \nDuring my PhD\, I focused on constraining CEE hydrodynamical simulations using observations of those post-CEE systems (close binaries\, WFs\, and PNe). In this colloquium\, I will discuss the key insights I have got into the understanding of CEE during my PhD years. URL:https://uwm.edu/physics/event/physics-colloquium-jean-creighton/ 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:20260417T130000 DTEND;TZID=America/Chicago:20260417T140000 DTSTAMP:20260611T092910 CREATED:20260130T141202Z LAST-MODIFIED:20260130T141202Z UID:10435384-1776430800-1776434400@uwm.edu SUMMARY:CGCA Seminar - Janeth Valverde DESCRIPTION:Title and abstract to be determined\nJaneth Valverde\nMarquette University \nThe abstract for this talk will be added as soon as it is made available. URL:https://uwm.edu/physics/event/cgca-seminar-janeth-valverde/ LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States CATEGORIES:CGCA Seminars X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260417T153000 DTEND;TZID=America/Chicago:20260417T170000 DTSTAMP:20260611T092910 CREATED:20260212T194448Z LAST-MODIFIED:20260413T143551Z UID:10435390-1776439800-1776445200@uwm.edu SUMMARY:Physics Colloquium - Nicholas Stone DESCRIPTION:Gravitational Waves from Galactic Nuclei\nNicholas Stone\, Assistant Professor\nDepartment of Astronomy\, University of Wisconsin-Madison \nThe discovery of GW150914 inaugurated the era of gravitational wave (GW) astronomy\, opening a new window to study our Universe’s compact objects and through which to test general relativity. Now\, a decade later\, the LIGO-Virgo-KAGRA (LVK) collaboration has seen hundreds of GW signals\, overwhelmingly from mergers of binary stellar mass black holes. Despite the many successes of GW astronomy\, a zeroth-order astrophysical question remains unanswered: what astrophysical environments produce the LVK binary black holes\, and by what process are they assembled? Although many formation channels have been proposed\, one uniquely testable solution is the “AGN channel:” a scenario in which individual black holes pair up and merge in the dissipative gaseous environment of an active galactic nucleus. I will review recent progress in understanding the ecology of stars and black holes embedded in the massive gas disks of AGN\, an astrophysics problem not unlike that describing planet formation in protoplanetary gas disks. I will then describe the unique predictions of the AGN channel for the LVK population of binary black hole mergers\, focusing both on GW signatures as well as electromagnetic counterparts\, both direct (transient) and indirect (statistical). Finally\, I will briefly discuss the implications of the AGN channel for a future class of GW sources: the extreme mass ratio inspirals visible to future mHz space-based interferometers such as LISA\, which are produced when stellar mass black holes inspiral into the supermassive ones at the very centers of active or quiescent galactic nuclei. URL:https://uwm.edu/physics/event/physics-colloquium-nick-stone/ 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:20260421T160000 DTEND;TZID=America/Chicago:20260421T173000 DTSTAMP:20260611T092910 CREATED:20260413T201616Z LAST-MODIFIED:20260413T201616Z UID:10435396-1776787200-1776792600@uwm.edu SUMMARY:Physics Colloquium - Thomas D. Killeen DESCRIPTION:Novel Imaging Techniques for Studying Interactions of Membrane Receptors Among Themselves and with Downstream Signaling Partners\nThomas D. Killeen\, PhD Candidate\nUniversity of Wisconsin-Milwaukee Department of Physics & Astronomy \nCells rely on complex signaling networks to sense and respond to environmental stimuli\, but the bigger picture of how molecular assembly leads to robust cellular signaling is only beginning to emerge. A major challenge in characterizing cellular signaling is the ability to directly observe the dynamic interactions between membrane receptors and intracellular signaling partners in living cells. To address this challenge\, this work presents the development of advanced fluorescence imaging and computational analysis tools designed to improve the precision and quantitative power of live-cell micro-spectroscopy for studying protein dynamics in real time. \nI will show how these tools can be used to investigate the interactions between the muscarinic acetylcholine receptor M2 (M2R) and two intracellular signaling partners\, arrestin-2 and arrestin-3\, in living cells. Quantitative imaging revealed distinct differences in arrestin recruitment and membrane association following receptor activation\, providing new insight into receptor regulation and signaling behavior. \nOverall\, this work demonstrates how innovations in fluorescence microscopy and data analysis can expand our ability to probe molecular signaling networks in living systems. URL:https://uwm.edu/physics/event/physics-colloquium-thomas-d-killeen/ LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260424T130000 DTEND;TZID=America/Chicago:20260424T140000 DTSTAMP:20260611T092910 CREATED:20260130T141303Z LAST-MODIFIED:20260424T132235Z UID:10435385-1777035600-1777039200@uwm.edu SUMMARY:CGCA Seminar - Matt Miles DESCRIPTION:Galaxy-Scale Gravitational Wave Detection: The MPTA and the Road Ahead\nDr. Matt Miles\nVanderbilt University \nGravitational waves are emitted across a vast spectrum of frequencies. Ground-based detectors such as LIGO/Virgo/KAGRA observe relatively high-frequency waves from compact object mergers\, while at the other end of the spectrum\, the inspirals of supermassive black hole binaries produce a low-frequency rumble detectable only with a galaxy-scale instrument. By monitoring the pulses emitted by millisecond pulsars distributed across the Milky Way\, pulsar timing arrays construct such a detector\, spanning thousands of light-years. In recent years\, multiple pulsar timing array collaborations have reported mounting evidence for a gravitational wave background permeating the galaxy\, and the international effort to combine data across these experiments is well underway. In this talk\, I will describe how pulsar timing arrays operate\, what we have found so far — with a focus on the MeerKAT Pulsar Timing Array\, which exploits one of the world’s most sensitive radio telescopes — and the road ahead. I will also discuss new tools and techniques being developed to push the frontiers of pulsar timing\, including faster and more accessible timing software\, methods that exploit the full information content of pulse profiles rather than collapsing them to single arrival times\, and novel approaches to measuring pulsar distances using gravitational wave signals themselves. URL:https://uwm.edu/physics/event/cgca-seminar-matt-miles/ LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States CATEGORIES:CGCA Seminars X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260501T130000 DTEND;TZID=America/Chicago:20260501T140000 DTSTAMP:20260611T092910 CREATED:20260219T154346Z LAST-MODIFIED:20260219T154346Z UID:10435394-1777640400-1777644000@uwm.edu SUMMARY:CGCA Seminar - Shanika Galaudage DESCRIPTION:Title and abstract to be determined\nShanika Galaudage\nNorthwestern University \nThe abstract for this talk will be added as soon as it is made available. URL:https://uwm.edu/physics/event/cgca-seminar-shanika-galaudage/ LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States CATEGORIES:CGCA Seminars X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20260501T153000 DTEND;TZID=America/Chicago:20260501T170000 DTSTAMP:20260611T092910 CREATED:20260212T194613Z LAST-MODIFIED:20260413T143321Z UID:10435391-1777649400-1777654800@uwm.edu SUMMARY:Physics Colloquium - Cancelled DESCRIPTION:This week’s Physics Colloquium has been cancelled. URL:https://uwm.edu/physics/event/physics-colloquium-justin-goodrich-2/ 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:20260508T153000 DTEND;TZID=America/Chicago:20260508T170000 DTSTAMP:20260611T092910 CREATED:20260212T194745Z LAST-MODIFIED:20260403T160023Z UID:10435392-1778254200-1778259600@uwm.edu SUMMARY:Physics Colloquium - Kyuil Cho DESCRIPTION:Superconductors Investigated by High-Energy Particle Irradiation\nDr. Kyuil Cho\, Assistant Professor\nDepartment of Physics\, Hope College \nSuperconductor is a material that shows zero resistivity and Meissner effect below its critical temperature. This material has been used for various applications such as superconducting wires\, medical device MRI\, superconducting magnets for particle accelerators\, quantum computing circuits\, and many more. The superconductivity research group at Hope College conducts unique research on novel superconductors by using high energy particles. High energy particle irradiation is a useful method to generate homogeneous artificial defects on superconductors. By investigating how the defects affect the properties of superconductors\, one can uncover the fundamental mechanism of superconductivity. \nIn this talk\, recent investigations on YBCO (0.6 and 1.7 MeV proton) and NbSe2 (2.5 MeV electron) will be presented. URL:https://uwm.edu/physics/event/physics-colloquium-kyuil-cho/ 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:20260522T153000 DTEND;TZID=America/Chicago:20260522T170000 DTSTAMP:20260611T092910 CREATED:20260219T153653Z LAST-MODIFIED:20260401T154020Z UID:10435393-1779463800-1779469200@uwm.edu SUMMARY:Physics Colloquium - Jorge Alegre-Cebollada DESCRIPTION:Titin-based Molecular Underpinnings of Skeletal and Cardiac Muscle Function\nJorge Alegre-Cebollada\, PhD\nAssociate Professor & Group Leader\, CNIC (Spanish National Center for Cardiovascular Research) \nTitin is the largest protein in the human body. The function of the protein is not any smaller: it is critical for the contractile activity of muscles in the skeletal system and in the heart. In my presentation\, I will introduce fundamental concepts that link titin nanomechanics with the macroscopic mechanical function of muscle. I will focus on our recent data demonstrating dysregulation of titin nanomechanics that can contribute to increased risk of heart failure in diabetic patients. \nTowards the end of my presentation\, I will describe how to harness titin mechanics to develop hydrogels with tailored viscoelasticity for applications in cell mechanobiology. Time permitting\, I will discuss about new models to study titin mechanics in living matter. URL:https://uwm.edu/physics/event/physics-colloquium-jorge-alegre-cebollada/ LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States CATEGORIES:Physics Colloquia X-TRIBE-STATUS: END:VEVENT END:VCALENDAR