期刊
ASTROPHYSICAL JOURNAL
卷 748, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/748/2/132
关键词
gamma-ray burst: general
资金
- NASA [SAO SV4-74018, NAS5-00136, NNX08AL40G, NNX10AD48G]
- NSF [PHY-0757155, AST-0908362]
- ASI [I/009/10/0]
- NSFC [10973008]
- 973 program [2009CB824800]
- Russian Space Agency
- Russian Foundation for Basic Research [09-02-00166, 11-02-12082]
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0908362] Funding Source: National Science Foundation
The double burst, GRB 110709B, triggered the Swift/Burst Alert Telescope (BAT) twice at 21:32:39 UT and 21:43:45 UT, respectively, on 2011 July 9. This is the first time we observed a gamma-ray burst (GRB) with two BAT triggers. In this paper, we present simultaneous Swift and Konus-WIND observations of this unusual GRB and its afterglow. If the two events originated from the same physical progenitor, their different time-dependent spectral evolution suggests they must belong to different episodes of the central engine, which may be a magnetar-to-BH accretion system.
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