A Search for Gamma-ray Burst Subgroups in the SWIFT and RHESSI Databases

摘要：

A sample of 286 gamma-ray bursts (GRBs)detected by the Swift satellite and 358 GRBs detected by the RHESSIsatellite are studied statistically．Previously published articles,based on the BATSE GRB Catalog,claimed the existence ofan intermediate subgroup of GRBS with respect to duration．We use the statistical X2 test and the F-test to compare thenumber Of GRB subgroups in our databases witb the earlier BATSE results．Similarly to the BATSE database,the short andlong subgroups are well detected in the Swift and RHESSI data．However,contrary to the BATSE data,we have not found astatistically significant inermediate subgroup in either Swift or RHESSI data．

关键词： gamma-ray astrophysics gamma-ray bursts

作者: Jakub Ripa David Huja Attila Meszaros Rene Hudec Wojtek Hajdas Claudia Wigger

作者单位: Astronomical Institute of the Charles University,V Holesovickach 2,Prague,Czech Republic Astronomical Institute,Academy of Sciences of the Czech Republic,Ondrejov,CzechRepublic Paul Scherrer Institut,Villigen,Switzerland Paul Scherrer Institut,Villigen,Switzerl and Kantonsschule Wohlen,Switzerland

会议类型: 国际会议

会议名称: 2008 NanJing Gamma-Ray Burst Conference(2008年伽马暴国际研讨会)

会议地点: 南京

会议语种:英文

页码: 71-74

在线出版日期: 2008-06-23（万方平台首次上网日期，不代表论文的发表时间）