Bulletin of the American Physical Society
APS April Meeting 2016
Volume 61, Number 6
Saturday–Tuesday, April 16–19, 2016; Salt Lake City, Utah
Session S4: Supernovae - New Clues and ChallengesInvited
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Sponsoring Units: DAP Chair: Fiona Harrison, California Institute of Technology Room: Ballroom C |
Monday, April 18, 2016 1:30PM - 2:06PM |
S4.00001: New Physical and Numerical Insights into the Core-Collapse Supernova Mechanism Invited Speaker: Adam Burrows Core-collapse supernovae have challenged theorists and computational science for half a century. Such explosions are the source of many of the heavy elements in the Universe and the birthplace of neutron stars and stellar-mass black holes. However, determining the mechanism of explosion remains the key goal of theory. Though the synergistic operation of turbulence and neutrino heating seems implicated, and multi-dimensional simulations with some physical fidelity that have provided insight, we have yet to reproduce the phenomenon theoretically. In this talk, I will review the goals of supernova theory, the state of the field, and new numerical insights into the contending explosion models. [Preview Abstract] |
Monday, April 18, 2016 2:06PM - 2:42PM |
S4.00002: 44Ti and other Gamma Rays from SN 1987A Invited Speaker: Steven Boggs |
Monday, April 18, 2016 2:42PM - 3:18PM |
S4.00003: The Nuclear Physics of Type Ia Supernovae Invited Speaker: Edward Brown Type Ia supernovae (SNe Ia) are the thermonuclear incineration of white dwarfs, which are the evolutionary terminus of low-mass stars; these supernovae are a primary source of iron in the universe and the premier distance indicator for cosmological studies. Current and future observational surveys are uncovering tantalizing clues about the as-yet-unknown progenitors of these explosions. In this talk, I shall review the nuclear physics of the explosion, with a particular emphasis on the role of weak interactions. Electron captures during the pre-explosive ``simmering'' and the explosion make the nucleosynthetic yields more neutron-rich. This provides in principle a way to constrain the nature of the progenitor from observations. I shall also highlight recent experimental constraints on electron-capture rates and prospects for further experimental studies, such as at the \emph{Facility for Rare Isotope Beams}. [Preview Abstract] |
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