Millisecond pulsars with extremely strong magnetic fields as a cosmological source of gamma-ray bursts

Details Millisecond pulsars with extremely strong magnetic fields as a cosmological source of gamma-ray bursts Millisecond pulsars with extremely strong magnetic fields as a cosmological source of gamma-ray bursts

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.357..472u&link_type=abstract

Nature (ISSN 0028-0836), vol. 357, no. 6378, June 11, 1992, p. 472-474.

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Cataclysmic Variables, Gamma Ray Bursts, Pulsars, Stellar Magnetic Fields, Brightness Distribution, Computational Astrophysics, Electron-Positron Pairs, Gamma Ray Observatory, Spatial Distribution, Stellar Rotation

Scientific paper

A new model for gamma-ray bursts at cosmological distances is presented which is based on the formation of rapidly rotating neutron stars with surface magnetic fields of the order of 10 exp 15 G. Such objects could form by the gravitational collapse of accreting white dwarfs with anomalously high magnetic fields in binaries, as in magnetic cataclysmic binaries. Once formed, such rapidly rotating and strongly magnetized neutron stars would lose their rotational kinetic energy catastrophically, on a timescale of seconds or less. Rotation of the magnetic field creates a strong electric field and hence an electron-positron plasma which is shown here to be optically thick and in quasi-thermodynamic equilibrium. This plasma flows away from the neutron star at relativistic speeds, and X-ray and gamma-ray emission at the photosphere of this relativistic wind may then reproduce the observational characteristics of a gamma-ray burst.

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