Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258..716w&link_type=abstract
Astrophysical Journal, Part 1, vol. 258, July 15, 1982, p. 716-732.
Astronomy and Astrophysics
Astronomy
72
Gamma Ray Bursts, Magnetohydrodynamics, Neutron Stars, Stellar Mass Accretion, Thermonuclear Reactions, X Ray Astronomy, Deflagration, Detonation, Helium, Hydrogen, Stellar Magnetic Fields, Stellar Models
Scientific paper
Inferential and quantitative evidence supporting a model of extrasolar high energy gamma-ray bursts as originating from thermonuclear explosions on highly magnetized neutron stars is discussed. The build-up of a critical mass of helium within small, magnetically focused regions of a neutron star surface is described as leading to magnetic field annihilation coupled with charged particle acceleration. Helium and hydrogen accrete and are magnetically confined on a proposed iron substrate. Several models are proposed which involve either maintenance of the confinement, spreading, or replacement of the He and H with Fe-56, with all models indicating some limit to the spreading of the accreted nuclear matter. Detonation of the He is calculated to release 10 to the 38th-40th ergs/sq km of thermonuclear energy, yielding multibillion degree plasma which expands and stresses the magnetic field, producing a gamma ray outburst.
Wallace Richard K.
Woosley Stan E.
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