主要内容:
进而估计探测到引力波的探测率，大约1个一年。
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文章信息:
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- · arXiv e-print (arXiv:1202.0804)
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| Title: |
| Compact object coalescence rate estimation from short gamma-ray burst observations |
| Authors: |
| Enrico Petrillo, Carlo; Dietz, Alexander |
| Publication: |
| eprint arXiv:1202.0804 |
| Publication Date: |
| 02/2012 |
| Origin: |
| ARXIV |
| Keywords: |
| Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology |
| Comment: |
| 7 pages, 3 figures |
| Bibliographic Code: |
| 2012arXiv1202.0804E |
Abstract
Recent observational and theoretical work increase the confidence that short-duration gamma-ray bursts are created by the coalescence of compact objects, like neutron stars and/or black holes. From the observation of short-duration gamma-ray bursts with know distances it is possible to infer their rate in the local universe, and draw conclusions for the rate of compact binary coalescences. Although the sample of such events with reliable redshift measurements is very small, we try to model the distribution with a luminosity function and a rate function. The analysis performed with a sample of 15 short gamma-ray bursts yields a range for the merger rate of 75 to 660 Gpc$^{-3}$yr$^{-1}$, with a median rate of 180 Gpc$^{-3}$yr$^{-1}$. This result is in general agreement with similar investigations using gamma-ray burst observations. Furthermore, we estimate the number of coincident observations of gravitational wave signals with short gamma-ray bursts in the advanced detector era. Assuming each short gamma-ray burst is created by a double neutron star merger, the expected rate of coincident observations is 0.1 to 1.1 per year, when assuming each short gamma-ray burst is created by a merger of a neutron star and a black hole, this rate becomes 0.4 to 4.0 per year.
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