Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-12-22
Astrophys.J. 594 (2003) 924-935
Astronomy and Astrophysics
Astrophysics
12 pages, 3 figures, submitted to Physical Review D
Scientific paper
10.1086/377154
We examine the stability of self-similar solutions for an accelerating relativistic blast wave which is generated by a point explosion in an external medium with a steep radial density profile of a power-law index > 4.134. These accelerating solutions apply, for example, to the breakout of a gamma-ray burst outflow from the boundary of a massive star, as assumed in the popular collapsar model. We show that short wavelength perturbations may grow but only by a modest factor <~ 10.
Loeb Abraham
Wang Xiaohu
Waxman Eli
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