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  Gravitational Waves from Compact Objects Accreting onto Active Galactic Nuclei

Schnittman, J. D., Sigl, G., & Buonanno, A. (2006). Gravitational Waves from Compact Objects Accreting onto Active Galactic Nuclei. In AIP Conference Proceedings.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-DCA3-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-DCA4-4
Genre: Conference Paper

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 Creators:
Schnittman, Jeremy D., Author
Sigl, Guenter, Author
Buonanno, Alessandra1, 2, Author              
Affiliations:
1Physics Department, University of Maryland, ou_persistent22              
2Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: Astrophysics, astro-ph
 Abstract: We consider a model in which massive stars form in a self-gravitating accretion disk around an active galactic nucleus. These stars may evolve and collapse to form compact objects on a time scale shorter than the accretion time, thus producing an important family of sources for LISA. Assuming the compact object formation/inspiral rate is proportional to the steady-state gas accretion rate, we use the observed extra-galactic X-ray luminosity function to estimate expected event rates and signal strengths. We find that these sources will produce a continuous low-frequency background detectable by LISA if more than >~ 1% of the accreted matter is in the form of compact objects. For compact objects with m >~ 10 Msun, the last stages of the inspiral events should be resolvable above a few mHz, at a rate of ~10-100 per year.

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 Dates: 2006-08-282006
 Publication Status: Published in print
 Pages: 7 pages, to appear in Proceedings of Sixth International LISA Symposium
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: astro-ph/0608596
DOI: 10.1063/1.2405081
URI: http://arxiv.org/abs/astro-ph/0608596
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Title: Laser Interferometer Space Antenna: 6th International LISA Symposium
Place of Event: Greenbelt, Maryland (USA)
Start-/End Date: 2006-06-19 - 2006-06-23

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Title: AIP Conference Proceedings
Source Genre: Proceedings
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Pages: - Volume / Issue: 873 Sequence Number: 437 Start / End Page: - Identifier: -