Bulletin of the American Physical Society
2009 APS April Meeting
Volume 54, Number 4
Saturday–Tuesday, May 2–5, 2009; Denver, Colorado
Session W3: Nuclear Physics Connections with Astrophysics/Cosmology |
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Sponsoring Units: DNP Chair: James Nagle, University of Colorado at Boulder Room: Plaza E |
Tuesday, May 5, 2009 10:45AM - 11:21AM |
W3.00001: Matter under extreme conditions and its role in explosive astrophysical phenomena Invited Speaker: Neutron stars host some of the most spectacular explosions in the universe. These include core-collapse supernova, thermonuclear bursts on accreting neutron stars, and flares on highly magnetized neutron stars called magnetars. Over the past decade attempts to model these phenomena have helped us understand how the properties of matter at extreme density shape these explosions. In my talk I will describe recent progress in theories of dense neutron star matter and how they influence explosive phenomena on neutron stars. The interplay between dense matter theory, astrophysical simulations and observations can test theoretical predictions for the phase structure and properties of matter at extreme density. I will briefly describe the connection between observations that can tell us mass, radius and temperature of neutron stars and the dense matter equation of sta [Preview Abstract] |
Tuesday, May 5, 2009 11:21AM - 11:57AM |
W3.00002: Quark-Gluon Plasma: The Stuff of the Early Universe Invited Speaker: In its earliest, densest stages our Universe was an inhospitable place, filled with relativistic gases of every known particle. At temperatures above a trillion degrees Kelvin -- roughly the first microsecond after the Big Bang -- the Universe was dominated by the hadronic/QCD sector, and the properties of strongly interacting matter in this regime are now being studied experimentally using ultra-relativistic collisions between nuclei. In this talk we will review the basic framework used to describe the early thermal Universe, and discuss how recent results in nuclear physics may have a bearing on the Universe's evolution in its earliest history. [Preview Abstract] |
Tuesday, May 5, 2009 11:57AM - 12:33PM |
W3.00003: Neutron Stars and the PREX Experiment Invited Speaker: A neutron star is a gold mine for the study of the phase diagram of cold baryonic matter. Perhaps the most remarkable fact about spherically-symmetric neutron stars in hydrostatic equilibrium -- the so-called Schwarzschild stars -- is that the only physics that they are sensitive to is the equation of state of neutron-rich matter. As such, neutron stars provide a myriad of observables that may be used to constrain the nuclear equation of state under extreme conditions of density. Conversely, I will argue how laboratory experiments, such as the Parity Radius Experiment (PREx) at the Jefferson Laboratory, may be used to develop strong correlations between the neutron radius of 208Pb and a host of neutron-star observables. [Preview Abstract] |
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