Constraining the Magnetic Field in Gamma Ray Burst Blast Waves
| dc.creator | Mitra, Abhas | |
| dc.date | 1998-02-11 | |
| dc.date.accessioned | 2026-07-07T02:26:02Z | |
| dc.date.available | 2026-07-07T02:26:02Z | |
| dc.description | We point out that the already existing literature on relativistic collisionless MHD shocks show that the parameter sigma= upstream proper magnetic energy density/upstream rest mass energy density, plays an important role in determining the structure and accelerating properties of such shocks. By adopting a value of sigma= 0.002 which corresponds to the relativistic shock associated with the Crab nebula, and by using appropriate relativistic shock jump conditions, we obtain here a generous upper-limit on the value of (proper) the magnetic field, B ~ 1.5 10^{-3} eta n^{1/2} G, for gamma ray burst (GRB) blast wave. Here, eta= E/Mc^2, where E is the energy and M is the mass of the baryons entrained in the original fireball (FB), and n is the proper number density of the ambient medium. Further, we point out that, in realistic cases, the actual value B could be as low as 5 10^{-6} eta n^{1/2} G. for realistic cases. | |
| dc.description | 15 pages Latex using aasms4.sty file and a Postscript Fig., submitted to Astrophy. J. on Janurary 22, 1998 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9802125 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9802125 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/12114 | |
| dc.subject | Astrophysics | |
| dc.title | Constraining the Magnetic Field in Gamma Ray Burst Blast Waves | |
| dc.type | text |