Gravitational-wave background from compact objects embedded in AGN accretion disks

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dc.creatorSigl, Guenter
dc.creatorSchnittman, Jeremy
dc.creatorBuonanno, Alessandra
dc.date2006-10-23
dc.date.accessioned2026-07-07T10:40:36Z
dc.date.available2026-07-07T10:40:36Z
dc.descriptionWe consider a model in which massive stars form in a self-gravitating accretion disk around an active galactic nucleus (AGN). 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 intrinsic hard X-ray AGN luminosity function to estimate expected event rates and signal strengths. We find that these sources will produce a continuous low-frequency (<~ mHz) background detectable by LISA if more than 1% of the accreted matter is in the form of compact objects. For compact objects with masses >~ 10 solar masses the last stages of the inspiral events should be resolvable above a few mHz, with rates as high as a few hundred per year.
dc.description14 revtex pages, 14 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0610680
dc.identifierhttp://arxiv.org/abs/astro-ph/0610680
dc.identifierPhys.Rev.D75:024034,2007
dc.identifierdoi:10.1103/PhysRevD.75.024034
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181379
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleGravitational-wave background from compact objects embedded in AGN accretion disks
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