主要内容:
依然只是上限，不过如果是来自很近的话，M81，那么排除了双星并合的模型，而可能是SGR。
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文章信息:
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- · arXiv e-print (arXiv:1201.4413)
- · References in the Article
- · Citations to the Article (2) (Citation History)
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| Title: |
| Implications For The Origin Of GRB 051103 From LIGO Observations |
| Authors: |
| The LIGO Scientific Collaboration; Abadie, J.; |
| Publication: |
| eprint arXiv:1201.4413 |
| Publication Date: |
| 01/2012 |
| Origin: |
| ARXIV |
| Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology |
| Comment: |
| 8 pages, 3 figures. For a repository of data used in the publication, go to: https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=15166. Also see the announcement for this paper on ligo.org at: http://www.ligo.org/science/Publication-GRB051103/index.php |
| Bibliographic Code: |
| 2012arXiv1201.4413T |
Abstract
We present the results of a LIGO search for gravitational waves (GWs) associated with GRB 051103, a short-duration hard-spectrum gamma-ray burst (GRB) whose electromagnetically determined sky position is coincident with the spiral galaxy M81, which is 3.6 Mpc from Earth. Possible progenitors for short-hard GRBs include compact object mergers and soft gamma repeater (SGR) giant flares. A merger progenitor would produce a characteristic GW signal that should be detectable at the distance of M81, while GW emission from an SGR is not expected to be detectable at that distance. We found no evidence of a GW signal associated with GRB 051103. Assuming weakly beamed gamma-ray emission with a jet semi-angle of 30 deg we exclude a binary neutron star merger in M81 as the progenitor with a confidence of 98%. Neutron star-black hole mergers are excluded with > 99% confidence. If the event occurred in M81 our findings support the the hypothesis that GRB 051103 was due to an SGR giant flare, making it the most distant extragalactic magnetar observed to date.
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