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X-WR-CALDESC:Events for Physics & Astronomy
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DTSTART;TZID=America/Chicago:20260206T130000
DTEND;TZID=America/Chicago:20260206T140000
DTSTAMP:20260614T033202
CREATED:20260130T135908Z
LAST-MODIFIED:20260130T135908Z
UID:10435377-1770382800-1770386400@uwm.edu
SUMMARY:CGCA Seminar - Abygail Waggoner
DESCRIPTION:What’s Feeding Terrestrial Planets? JWST Observations of Protoplanetary Disk\nDr. Abygail Waggoner\nUniversity of Wisconsin-Madison \nThe formation of terrestrial\, or earth-like\, planets is thought to occur in the inner few au of protoplanetary disks\, but what is the composition of the dust and gas that forming-planets may inherit? In this talk\, we’ll discuss how the James Webb Space Telescope can be used to measure the chemical composition of protoplanetary disk gas and how models can be used to understand the evolution of material throughout planet formation. We will focus specifically on results from the ALMA/JWST survey of Gas Evolution in PROtoplanetary disks (AGE-PRO) large collaboration (PI: Ke Zhang). AGE-PRO uses a combination of ALMA observations\, JWST observations\, and chemical disk models of thirty protoplanetary disks spanning the planet formation process (~0.5 to 6 Myr old) to gain a (relatively) comprehensive picture of gas and dust evolution of planet formation.
URL:https://uwm.edu/physics/event/cgca-seminar-abygail-waggoner/
LOCATION:KIRC KEN 2175\, 3135 N. Maryland Ave.\, Milwaukee\, 53211
CATEGORIES:CGCA Seminars
X-TRIBE-STATUS:
GEO:43.0754962;-87.8839451
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC KEN 2175 3135 N. Maryland Ave. Milwaukee 53211;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20260206T153000
DTEND;TZID=America/Chicago:20260206T170000
DTSTAMP:20260614T033202
CREATED:20250919T155024Z
LAST-MODIFIED:20250919T155024Z
UID:10435357-1770391800-1770397200@uwm.edu
SUMMARY:Physics Colloquium - Lulu Agazie
DESCRIPTION:Physics Colloquium – Lulu Agazie\, UWM Physics\nPresentation title and abstract will be announced when they are available.
URL:https://uwm.edu/physics/event/physics-colloquium-lulu-agazie/
LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20260213T130000
DTEND;TZID=America/Chicago:20260213T140000
DTSTAMP:20260614T033202
CREATED:20260130T140204Z
LAST-MODIFIED:20260130T140204Z
UID:10435378-1770987600-1770991200@uwm.edu
SUMMARY:CGCA Seminar - Shio Sakon
DESCRIPTION:Detecting Gravitational Wave Signals – Methods\, Challenges\, and Opportunities\nShio Sakon\nPennsylvania State University \nThe LIGO-Virgo-KAGRA Collaboration’s fourth observing run (O4) produced a remarkable expansion of the gravitational-wave transient catalog\, with nearly three times as many significant detections as were known at the start of the run. Among these were several first-of-their-kind events that challenged existing theories\, and the increased rate of detections reflected the improvement in detector sensitivity and analysis capabilities over the past decade.   \nThis seminar will focus on the development and operation of the GstLAL matched-filter search pipeline\, which identified over 240 significant gravitational-wave candidates during O4. I will discuss the new method for constructing template banks\, sets of simulated gravitational-wave signals that form the foundation of matched-filter searches\, which improves the computational efficiency of bank generation. This approach was deployed in all O4 GstLAL production analyses\, including the subsolar-mass search\, which targets potential signatures of new physics and represents an additional area of my work. \nGravitational-wave astronomy has an exciting future ahead. With upcoming observing runs starting in mid to late this year\, future observing runs in the planning\, and next-generation detectors on the horizon\, the opportunities for discovery are rapidly expanding. Multi-messenger observations\, deeper searches\, and computationally efficient pipelines will play a central role in revealing new aspects of our Universe. I will outline the research I envision in the future observing runs with an emphasis on enabling future discoveries.
URL:https://uwm.edu/physics/event/cgca-seminar-shio-sakon/
LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:CGCA Seminars
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20260220T130000
DTEND;TZID=America/Chicago:20260220T140000
DTSTAMP:20260614T033202
CREATED:20260130T140441Z
LAST-MODIFIED:20260219T153957Z
UID:10435379-1771592400-1771596000@uwm.edu
SUMMARY:CGCA Seminar - Debatri Chattopadhyay
DESCRIPTION:Neutron Star–Black Hole Binaries: Predictions and Observations\nDebatri Chattopadhyay\nNorthwestern University \nNeutron star–black hole (NS–BH) binaries have emerged as key targets for multi-messenger astrophysics following the first gravitational wave detections of such systems. In this talk\, I present population synthesis predictions for the Galactic NS–BH population\, models that interpret the first observed mergers\, and forecasts for future radio\, gravitational-wave\, and electromagnetic discoveries. Using binary evolution simulations\, we predict tens – hundreds of NS–BH systems in the Milky Way\, albeit very few of which should be detectable as pulsar–black hole binaries with next-generation radio facilities and as low-frequency gravitational-wave sources. Modelling of the first NS–BH merger events indicates consistency with low-metallicity progenitors and low black hole natal spins\, implying that most mergers may produce weak or absent electromagnetic counterparts. I further show how upcoming surveys and detectors will enable joint radio and gravitational wave observations\, and how kilonova searches can constrain neutron star structure in a subset of systems. These results place NS–BH binaries in a broader context of neutron star binary evolution and highlight their role as laboratories for testing compact object formation\, binary evolution\, and multi-messenger astrophysics in the coming decade.
URL:https://uwm.edu/physics/event/cgca-seminar-debatri-chattopadhyay/
LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:CGCA Seminars
X-TRIBE-STATUS:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20260227T130000
DTEND;TZID=America/Chicago:20260227T140000
DTSTAMP:20260614T033202
CREATED:20260130T140616Z
LAST-MODIFIED:20260225T202715Z
UID:10435380-1772197200-1772200800@uwm.edu
SUMMARY:CGCA Seminar - Kenzie Nimmo
DESCRIPTION:Unraveling the origins of fast radio bursts and using them as probes of extreme plasmas\nKenzie Nimmo\nNorthwestern University \nFast radio bursts (FRBs) are millisecond-duration flashes of coherent radio emission originating from extragalactic distances\, offering a unique view into the physics of compact objects and their surrounding environments. Despite their brief and unpredictable nature\, precise localizations of a small number of FRBs have already revealed a striking diversity in host galaxies\, local environments\, and burst properties – suggesting multiple progenitor channels linked to extreme compact objects. However\, the nature of FRB sources remains one of the most exciting mysteries in astrophysics. \nIn this talk\, I will show how combining high-precision localizations with detailed studies of FRB radio properties can disentangle their origins and probe the extreme plasma environments in which they reside. I will present new results from the now science-operational CHIME/FRB Outriggers project\, which is transforming the world’s most prolific FRB discovery instrument into a very long baseline interferometric array. The Outriggers have already approximately doubled the number of FRB host galaxies\, with many more expected in the near future. Beyond localizations\, the radio properties themselves encode key physical insights: scintillation measurements constrain the emission region to magnetospheric scales\, directly informing the emission mechanism\, while a declining electron column density over time observed in a repeating FRB points to an origin within an expanding supernova remnant. We are now entering a regime where large samples of FRBs have both detailed radio diagnostics and secure host-galaxy identifications\, enabling a far more complete understanding of the extreme astrophysical systems that power FRBs.
URL:https://uwm.edu/physics/event/cgca-seminar-kenzie-nimmo/
LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:CGCA Seminars
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20260227T153000
DTEND;TZID=America/Chicago:20260227T170000
DTSTAMP:20260614T033202
CREATED:20260212T193825Z
LAST-MODIFIED:20260212T193825Z
UID:10435386-1772206200-1772211600@uwm.edu
SUMMARY:Physics Colloquium - Ronan Humphrey
DESCRIPTION:Physics Colloquium – Ronan Humphrey\, UWM Physics\nPresentation title and abstract will be announced when they are available.
URL:https://uwm.edu/physics/event/physics-colloquium-ronan-humphrey/
LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States
CATEGORIES:Physics Colloquia
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