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Title: The association of GRB 060218 with a supernova and the evolution of the shock wave.
Authors: Campana, S
Mangano, V
Blustin, AJ
Brown, P
Burrows, DN
Chincarini, G
Cummings, JR
Cusumano, G
Della Valle M
Malesani, D
Mészáros, P
Nousek, JA
Page, M
Sakamoto, T
Waxman, E
Zhang, B
Dai, ZG
Gehrels, N
Immler, S
Marshall, FE
Mason, KO
Moretti, A
O'Brien, PT
Osborne, JP
Page, KL
Romano, P
Roming, PW
Tagliaferri, G
Cominsky, LR
Giommi, P
Godet, O
Kennea, JA
Krimm, H
Angelini, L
Barthelmy, SD
Boyd, PT
Palmer, DM
Wells, AA
White, NE
First Published: 31-Aug-2006
Citation: NATURE, 2006, 442 (7106), pp. 1008-1010
Abstract: Although the link between long gamma-ray bursts (GRBs) and supernovae has been established, hitherto there have been no observations of the beginning of a supernova explosion and its intimate link to a GRB. In particular, we do not know how the jet that defines a gamma-ray burst emerges from the star's surface, nor how a GRB progenitor explodes. Here we report observations of the relatively nearby GRB 060218 (ref. 5) and its connection to supernova SN 2006aj (ref. 6). In addition to the classical non-thermal emission, GRB 060218 shows a thermal component in its X-ray spectrum, which cools and shifts into the optical/ultraviolet band as time passes. We interpret these features as arising from the break-out of a shock wave driven by a mildly relativistic shell into the dense wind surrounding the progenitor. We have caught a supernova in the act of exploding, directly observing the shock break-out, which indicates that the GRB progenitor was a Wolf-Rayet star.
DOI Link: 10.1038/nature04892
eISSN: 1476-4687
Type: Journal Article
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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