Dynamics of Relativistic Magnetic Explosions in Gamma Ray Bursters

Details Dynamics of Relativistic Magnetic Explosions in Gamma Ray Bursters Dynamics of Relativistic Magnetic Explosions in Gamma Ray Bursters

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.x6008l&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

We investigate the dynamics of relativistic explosions under the assumption that most energy is released by the GRB progenitor in a form of toroidal magnetic fields (relativistic magnetic bubble). Inside the force-free (and possibly baryon-free) causally connected bubble the hoop stresses of the magnetic field produce a non-spherically symmetric outflow with Lorentz factor of the containing contact discontinuity increasing towards the polar axes defined by the rotation of the progenitor. Such expanding magnetic bubble will produce a similarly anisotropic blast wave. Dissipative current instabilities developing near the axes and possibly at the contact discontinuity result in particle acceleration and high energy emission.

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