Extended Emission of Short Gamma-Ray Bursts
Preliminary results of our analysis on the extended emission of short/medium duration GRBs observed withSwift/BAT are presented. The Bayesian blocks algorithm is used to analyze the burst durations and the temporal structureof the lightcurves in different energy bands. We show here the results of three bursts (GRBs 050724, 061006 and 070714B)that have a prominent soft extended emission component in our sample. The extended emission of these bursts is a continuous,flickering-liked component, lasting ～100 seconds post the GRB trigger at 15-25 keV bands. Without considering this component, the three bursts are classified as short GRBs, with T90= 2～ 3 seconds. GRB 060614 has an emission component similarto the extended emission, but this component has pulse-liked structure, possibly indicating that this emission component isdifferent from that observed in GRBs 050724, 061006, and 070714B. Further analysis on the spectral evolution behavior ofthe extended emission component is on going.
Gamma-ray bursts
Lin Lin En-Wei Liang Bin-Bin Zhang Shuang Nan Zhang
Department of Physics and Center for Astrophysics,Tsinghua niversity,Beijing 100084,China Department of Physics,Guangxi University,Nanning 530004,China Department of Physics and Astronomy,University of Nevada,Las Vegas,NV 89154,USA Department of Physics and Center for Astrophysics,Tsinghua University,Beijing 100084,China
国际会议
2008 NanJing Gamma-Ray Burst Conference(2008年伽马暴国际研讨会)
南京
英文
39-42
2008-06-23（万方平台首次上网日期，不代表论文的发表时间）