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Title: The shock break-out of GRB060218/SN2006aj
Authors: Campana, Sergio
Mangano, V.
Blustin, A.J.
Brown, P.
Burrows, David N.
Chincarini, Guido
Cummings, J.R.
Cusumano, Giancarlo
Della Valle, M.
Malesani, D.
Mészáros, P.
Nousek, John A.
Page, M.
Sakamoto, Takanori
Waxman, E.
Zhang, B.
Dai, Z.G.
Gehrels, Neil
Immler, S.
Marshall, F.E.
Mason, K.O.
Moretti, Alberto
O'Brien, Paul T.
Osborne, Julian P.
Page, Kim L.
Romano, Patrizia
Roming, P.W.A.
Tagliaferri, Gianpiero
Cominsky, L.R.
Giommi, Paolo
Godet, Olivier
Kennea, Jamie A.
Krimm, H.
Angelini, Lorella
Barthelmy, Scott D.
Boyd, P.T.
Palmer, D.M.
Wells, Alan A.
White, N.E.
First Published: 2006
Citation: Nature, 2006, 442, pp.1008-1010.
Abstract: Although the link between long Gamma Ray Bursts (GRBs) and supernovae (SNe) 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 however how a GRB jet emerges from the star surface nor how a GRB progenitor explodes. Here we report on observations of the close GRB060218 and its connection to SN2006aj. In addition to the classical non-thermal emission, GRB060218 shows a thermal component in its X–ray spectrum, which cools and shifts into the optical/UV band as time passes. We interpret these features as arising from the break out of a shock driven by a mildly relativistic shell into the dense wind surrounding the progenitor. Our observations allow us for the first time to catch a SN in the act of exploding, to directly observe the shock break-out and to provide strong evidence that the GRB progenitor was a Wolf-Rayet star.
ISSN: 0028-0836
eISSN: 1476-4687
Version: Preprint
Type: Journal Article
Description: This is a preprint, as archived in, of the paper subsequently published as Nature, 2006, 442, pp.1008-1010 and available from
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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