http://arxiv.org/abs/1504.03478
The question of whether ultra-long GRBs form a population different from that of “regular” long GRBs has been much debated recently and during the conference. We discuss here the data and the evidence that lead to the conclusion that indeed ultra-long GRBs form a different class of high energy transients. The sample of ultra-long GRBs is still poor and the discussion on their origin remain opens, though they might be the signature of PopIII stars. We urge that the design of new instrumentation, such as the SVOM satellite, takes into account the need for the detection of distant ultra-long GRBs.
M. Boer, B. Gendre and G. Stratta
Wed, 15 Apr 15
64/68
Comments: 7 pages, submitted for the proceedings of the “Swift 10 years of discovery” conference, Rome, December 2-5, 2014
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