Bulletin of the American Physical Society
APS April Meeting 2018
Volume 63, Number 4
Saturday–Tuesday, April 14–17, 2018; Columbus, Ohio
Session X04: Unveiling Massive Black HolesInvited
|
Hide Abstracts |
Sponsoring Units: DGRAV Chair: Emanuele Berte, The University of Mississippi Room: A120-122 |
Tuesday, April 17, 2018 10:45AM - 11:21AM |
X04.00001: Unveiling the first black holes Invited Speaker: Priyamvada Natarajan The detection of accreting supermassive black holes at early epochs when the universe was less than a Gyr old has posed a timing challenge for theoretical models of the formation of the first black holes. Starting from stellar remnants of the first stars requires fine tuning to assemble a billion solar masses so swiftly. Massive initial seeds, formed either from direct collapse of gas in pre-galactic disks or from rapidly amplified growth of light seeds can help alleviate this crunch. I will discuss these two formation channels, and how they can be distinguished. Infra-red observations with detectors aboard the upcoming James Webb Space Telescope and detection of gravitational waves from mergers at early times by the planned LISA mission offer tantalizing possibilities for discriminating between current theoretical models and offering new insights into the formation, fueling and growth of the first black holes. [Preview Abstract] |
Tuesday, April 17, 2018 11:21AM - 11:57AM |
X04.00002: Arguments For and Against Intermediate-Mass Black Holes Invited Speaker: Cole Miller Black hole masses have been measured in the range of a few solar masses to a few tens of solar masses, and from roughly a hundred thousand solar masses to twenty billion solar masses. But do they exist in the gap in between? I will discuss the cases for and against intermediate-mass black holes, with special attention to ultraluminous X-ray sources. I will also explore their possible role in the formation of supermassive black holes, and the expected contributions of both ongoing theoretical work and future gravitational-wave observations. [Preview Abstract] |
Tuesday, April 17, 2018 11:57AM - 12:33PM |
X04.00003: The quest for low frequency gravitational waves Invited Speaker: Enrico Barausse I will review the status of the space-based Laser Interferometer Space Antenna (LISA) and its science goals. LISA will detect gravitational waves in the frequency range $10^{-4} {\rm Hz} < f < 1 {\rm Hz}$, a region of the spectrum populated by a large variety of astrophysical sources. Among these, a major role will be played by the mergers of massive black holes, which LISA will detect up to very large redshifts $z \sim 10-20$. I will focus on the physics of these sources, as well as on how their detection by LISA will shape our understanding of astrophysics, cosmology and fundamental physics. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700