2007ApJ...667..351W


C.D.S. - SIMBAD4 rel 1.7 - 2020.03.28CET17:07:21

2007ApJ...667..351W - Astrophys. J., 667, 351-357 (2007/September-3)

GRB 060218: a relativistic supernova shock breakout.

WAXMAN E., MESZAROS P. and CAMPANA S.

Abstract (from CDS):

We show that the prompt and afterglow X-ray emission of GRB 060218, as well as its early (t≲1 day) optical-UV emission, can be explained by a model in which a radiation-mediated shock propagates outward from a compact progenitor star into a dense wind. The prompt thermal X-ray emission is produced in this model when the mildly relativistic shock, β~0.85, carrying a few times 1049 erg, reaches the wind (Thomson) photosphere, where the postshock thermal radiation is released and the shock becomes collisionless. Adopting this interpretation of the thermal X-ray emission, we predict a subsequent X-ray afterglow, due to synchrotron emission and inverse Compton scattering of supernova UV photons by electrons accelerated in the collisionless shock. Early optical-UV emission is also predicted, due to the cooling of the outer δM∼10–3 M envelope of the star, which was heated to high temperature during the shock passage. The observed X-ray afterglow and the early optical-UV emission are both consistent with those expected in this model. Detailed analysis of the early optical-UV emission may provide detailed constraints on the density distribution near the stellar surface.

Abstract Copyright:

Journal keyword(s): Gamma Rays: Bursts - Shock Waves - Stars: Supernovae: General

Status at CDS:  

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 817 1
2 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1632 2

    Equat.    Gal    SGal    Ecl

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2020.03.28-17:07:21

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