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The Propagation and Eruption of Relativistic Jets from the Stellar Progenitors of GRBs | | Weiqun Zhang
; S. E. Woosley
; A. Heger
; | | Date: |
22 Aug 2003 | | Subject: | astro-ph | | Affiliation: | 2 and 3) ( UCSC, LANL, U Chicago | | Abstract: | New two- and three-dimensional calculations are presented of relativistic jet propagation and break out in massive Wolf-Rayet stars. Such jets are thought responsible for gamma-ray bursts. As it erupts, the jet is surrounded by a cocoon of less energetic, but still highly relativistic ejecta that expands and becomes visible at much larger polar angles. These less energetic ejecta may be the origin of X-ray flashes and other high-energy transients which will be visible to a larger fraction of the sky, albeit to a shorter distance than common gamma-ray bursts. Jet stability is also examined in three-dimensional calculations. If the jet changes angle by more than three degrees in several seconds, it will dissipate, producing a broad beam with inadequate Lorentz factor to make a common gamma-ray burst. | | Source: | arXiv, astro-ph/0308389 | | Services: | Forum | Review | PDF | Favorites | |
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