Prospects for detection of gravitational waves from intermediate-mass-ratio inspirals

被引:78
作者
Brown, Duncan A. [1 ]
Brink, Jeandrew
Fang, Hua
Gair, Jonathan R.
Li, Chao
Lovelace, Geoffrey
Mandel, Ilya
Thorne, Kip S.
机构
[1] CALTECH, LIGO Lab, Pasadena, CA 91125 USA
[2] CALTECH, Pasadena, CA 91125 USA
[3] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA
[4] Inst Astron, Cambridge CB3 0HA, England
关键词
D O I
10.1103/PhysRevLett.99.201102
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We explore prospects for detecting gravitational waves from stellar-mass compact objects spiraling into intermediate mass black holes (BHs) (M similar to 50M(circle dot) to 350M(circle dot)) with ground-based observatories. We estimate a rate for such intermediate-mass-ratio inspirals of less than or similar to 1-30 yr(-1) in Advanced LIGO. We show that if the central body is not a BH but its metric is stationary, axisymmetric, reflection symmetric and asymptotically flat, then the waves will likely be triperiodic, as for a BH. We suggest that the evolutions of the waves' three fundamental frequencies and of the complex amplitudes of their spectral components encode (in principle) details of the central body's metric, the energy and angular momentum exchange between the central body and the orbit, and the time-evolving orbital elements. We estimate that advanced ground-based detectors can constrain central body deviations from a BH with interesting accuracy.
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页数:4
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