Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session U04: Compact-Binary populations across cosmic timeInvited
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Sponsoring Units: DGRAV Chair: Michael Zevin, University of Chicago Room: MG Salon C - 3rd Floor |
Tuesday, April 18, 2023 1:30PM - 2:06PM |
U04.00001: What can we learn from population synthesis and theory in the near-future Big Data Gravitational Wave Era Invited Speaker: Floor S Broekgaarden
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Tuesday, April 18, 2023 2:06PM - 2:42PM |
U04.00002: Next-generation gravitational-wave detectors and the nearby universe Invited Speaker: Thomas A Callister The next generation of ground-based gravitational-wave detectors will revolutionize our view of the gravitational-wave sky. Not only will instruments like Cosmic Explorer and the Einstein Telescope allow us to peer to higher redshifts than ever before, they will allow us to study the "nearby" Universe (redshifts z <7) with unprecedented clarity. Whereas the Advanced LIGO experiment detected the binary black hole merger GW150914 with a signal-to-noise ratio (SNR) of 24, for instance, next-generation detectors would have witnessed this same event with an SNR of approximately 2000. This extreme sensitivity will enable precision studies of a host of astrophysical processes and environments, from the behavior of matter in the dense interiors of neutron stars, to the history of massive star formation, to the properties of globular clusters and the chemical enrichment of galaxies. In this talk, I will survey some of these topics, discussing what next-generation gravitational-wave detectors will teach us about the "nearby" Universe and what data analysis challenges we might face along the way. |
Tuesday, April 18, 2023 2:42PM - 3:18PM |
U04.00003: What they do in the shadows: accessing high-redshift black hole mergers with next-generation detectors Invited Speaker: Salvatore Vitale Even at design sensitivity, advanced ground-based gravitational-wave detectors will only be able to detect binary black holes up to redshifts of 2. While this enables studying local populations of binary black holes, existing detectors are not likely to detect black holes that might have formed from the first generation of stars, or even primordial black holes, as those are expected to merge at redshift of several. By contrast next-generation detectors such as Cosmic Explorer and Einstein Telescope will access stellar-mass black holes to redshifts of 50 and higher. In this talk I will review the prospects for detecting and characterizing both populations and individual binary black holes at very high redshifts with next-generation detectors. |
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