CGCA Seminars
Calendar of Events
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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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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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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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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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