Bulletin of the American Physical Society
APS April Meeting 2017
Volume 62, Number 1
Saturday–Tuesday, January 28–31, 2017; Washington, DC
Session J15: Prize Talks: Black Holes and Cosmic ExplosionsInvited Prize/Award
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Sponsoring Units: DAP Chair: Fiona Harrison, California Institute of Technology Room: Washington 2 |
Sunday, January 29, 2017 10:45AM - 11:21AM |
J15.00001: Lilienfeld Prize Talk: How do massive black holes grow? Invited Speaker: Martin Rees The supermassive black holes in galactic nuclei evolve in symbiosis with their hosts. This paper will review how they grow, with particular emphasis on mergers, and on the complex phenomena associated with the tidal capture and disruption of stars. [Preview Abstract] |
Sunday, January 29, 2017 11:21AM - 11:57AM |
J15.00002: Edward A. Bouchet Award: Heavy element synthesis in the Universe Invited Speaker: Enrico Ramirez-Ruiz The source of about half of the heaviest elements in the Universe has been a mystery for a long time. Although the general picture of element formation is well understood, many questions about the nuclear physics processes and particularly the astrophysical details remain to be answered. Here I focus on advances in our understanding of the origin of the heaviest and rarest elements in the Universe. [Preview Abstract] |
Sunday, January 29, 2017 11:57AM - 12:33PM |
J15.00003: Hans A. Bethe Prize: Cosmic Collisions Online -- Compact Binary Mergers, Gravitational Waves and Gamma-Ray Bursts Invited Speaker: Stuart Shapiro Hans A. Bethe elucidated our understanding of the fundamental forces of Nature by exploring and explaining countless phenomena occurring in nuclear laboratories and in stars. With the dawn of gravitational wave astronomy we now can probe compact binary mergers -- Nature's cosmic collision experiments -- to deepen our understanding, especially where strong-field gravitation is involved. In addition to gravitational waves, some mergers are likely to generate observable electromagnetic and/or neutrino radiation, heralding a new era of multimessenger astronomy. Robust numerical algorithms now allow us to simulate these events in full general relativity on supercomputers. We will describe some recent magnetohydrodynamic simulations that show how binary black hole-neutron star and neutron star-neutron star mergers can launch jets, lending support to the idea that such mergers could be the engines that power short gamma-ray bursts. We will also show how the magnetorotational collapse of very massive stars to spinning black holes immersed in magnetized accretion disks can launch jets as well, reinforcing the belief that such ``collapsars'' are the progenitors of long gamma-ray bursts. Computer-generated movies highlighting some of these simulations will be shown. [Preview Abstract] |
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