Gamma-ray burst sources in strong magnetic fields

Astronomy and Astrophysics – Astronomy

Scientific paper

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Gamma Ray Bursts, Magnetic Flux, Neutron Stars, Plasma Radiation, Synchrotron Radiation, Hot Electrons, Pair Production, Spectral Emission

Scientific paper

The synchrotron model of gamma-ray burst sources in magnetic fields approaching the quantum critical value of Bc = me2c3/ehbar = 4.413×1012G is studied, with particular emphasis on the quantum effects that arise and their effect on the spectral emission. These include the reduction of the spectral emissivity below the classical value, and pair production by a single photon in the strong field. The quantum synchrotron continuum is modified by self-absorption at low energies and the pair production at high energies. Comparison of observations and theory lend weight to arguments in favour of anisotropic plasmas in burst sources.

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