|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'503'724
Articles rated: 2609
23 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Properties of Accretion Flows Around Coalescing Supermassive Black Holes | | Tamara Bogdanovic
; Tanja Bode
; Roland Haas
; Pablo Laguna
; Deirdre Shoemaker
; | | Date: |
12 Oct 2010 | | Abstract: | What are the properties of accretion flows in the vicinity of coalescing
supermassive black holes (SBHs)? The answer to this question has direct
implications for the feasibility of coincident detections of electromagnetic
(EM) and gravitational wave (GW) signals from coalescences. Such detections are
considered to be the next observational grand challenge that will enable
testing general relativity in the strong, nonlinear regime and improve our
understanding of evolution and growth of these massive compact objects. In this
paper we review the properties of the environment of coalescing binaries in the
context of the circumbinary disk and hot, radiatively inefficient accretion
flow models and use them to mark the extent of the parameter space spanned by
this problem. We report the results from an initial, general relativistic,
hydrodynamical study of the inspiral and merger of equal-mass, spinning black
holes, motivated by the latter scenario. We find that correlated EM+GW
oscillations can arise during the inspiral phase followed by the gradual rise
and subsequent drop-off in the light curve at the time of coalescence. While
there are indications that the latter EM signature is a more robust one, a
detection of either signal coincidentally with GWs would be a convincing
evidence for an impending SBH binary coalescence. The observability of an EM
counterpart in the hot accretion flow scenario depends on the details of a
model. In the case of the most massive binaries observable by the Laser
Interferometer Space Antenna, upper limits on luminosity imply that they may be
identified by EM searches out to z~0.1-1. However, given the radiatively
inefficient nature of the gas flow, we speculate that a majority of massive
binaries may appear as low luminosity AGN in the local universe. | | Source: | arXiv, 1010.2496 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER