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2012ApJ...748..132Z - Astrophys. J., 748, 132 (2012/April-1)
Unusual central engine activity in the double burst GRB 110709B.
ZHANG B.-B., BURROWS D.N., ZHANG B., MESZAROS P., WANG X.-Y., STRATTA G., D'ELIA V., FREDERIKS D., GOLENETSKII S., CUMMINGS J.R., NORRIS J.P., FALCONE A.D., BARTHELMY S.D. and GEHRELS N.
Abstract (from CDS):
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.
Abstract Copyright: ∼
Journal keyword(s): gamma-ray burst: general
Simbad objects: 8
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