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Detecting & Measuring Gravitational Waves in Current and Future Observatories Pratyusava Baral Low-latency (near real-time) detection of gravitational waves (GW) is crucial for multimessenger astronomy. I contribute to maintaining and operating the GstLAL-based search pipeline, a flagship detection pipeline used by the LIGO-Virgo-KAGRA collaboration, for the present observing run (May 2023 - ongoing). |
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Dr. Amy Steele, Planetary Science Institute The CGCA Friday Seminar Series is hosted by the Center for Gravitation, Cosmology & Astrophysics at the University of Wisconsin-Milwaukee. These seminars cover a broad number of topics related to the Center's research areas. …
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Due to circumstances beyond our control, the Physics Colloquium for Friday, 11/7/2025 is cancelled. Justin Goodrich, Brookhaven National Laboratory |
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Self-Consistent Simulations of the Bar-mode Instability in Rotating Quasi-Stable Neutron Stars Rapidly rotating neutron stars (NSs) formed from core-collapse supernovae serve as excellent astrophysical laboratories for probing their equation of state (EoS) and internal structure. As these stars cool and contract, their spin angular momentum may increase, making them susceptible to the dynamical bar-mode instability
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Due to circumstances beyond our control, the Physics Colloquium for Friday, 11/14/2025 has been cancelled. Jong-Woo Kim, Argonne National Lab |
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Space Rocks and Stardust Speakers: Pratyasha Gitika, Tamal RoyChowdhury, Laila Vleeschower Are shooting stars really stars falling from the sky? Spoiler alert: they’re not! Those quick flashes of light are actually tiny bits of space dust and rock burning up … |
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The masses and radii of the neutron stars observed by NICER Neutron stars are the densest known gravitationally-stable objects in the Universe. Their strong gravitational fields, rapid rotation rates, and supra-nuclear central densities allow for a fascinating interplay between general relativistic effects and nuclear physics theory. Pulse-profile modeling is a technique that uses the gravitationally-lensed X-ray flux emitted from hot spots on the neutron star's surface to infer its mass and radius. General relativity is a crucial ingredient in this analysis.
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Physics Colloquium - Julian May Mann, Stanford University Presentation title and abstract will be announced when they are available. |
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Frame-Dragging Reveals Central Engine of a Superluminous Supernova Type I superluminous supernovae (SLSNe-I) are an order of magnitude brighter than standard supernovae, with the internal power source for their luminosity still unknown. The central engines of SLSNe-I are hypothesized to be magnetars, but many SLSNe-I light curves exhibit multiple bumps or peaks that are unexplained by the standard magnetar model.
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Effect of Phosphorylation Barcodes on Arrestin Binding to a Chemokine Receptor Cells often fine-tune their responses to signals through chemical tags called phosphorylation 'barcodes' placed on receptors at the cell surface. Different G-protein coupled receptor (GPCR) kinases (GRKs) add these barcodes at different sites, but how these patterns influence arrestins — key proteins that control receptor signaling and trafficking — has been unclear. |
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What You Probably Don't Know About AI Speakers: Ronan Humphrey, Adam Opperman, Pratyusava Baral Over the last century, computing in science has changed from human computers doing calculations by hand to supercomputers that can perform over 1018 (that’s 1,000,000,000,000,000,000!) operations … |