Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249..297v&link_type=abstract
Astrophysical Journal, Part 1, vol. 249, Oct. 1, 1981, p. 297-301.
Astronomy and Astrophysics
Astronomy
28
Asteroids, Bursts, Gamma Ray Astronomy, Gravitational Collapse, Neutron Stars, Stellar Mass Accretion, Astronomical Models, Stellar Magnetic Fields, Supernova Remnants, Tides
Scientific paper
A mechanism is proposed by which asteroids may be scattered onto neutron stars causing impulsive and perhaps all gamma-ray bursts. Asteroids which remain bound to the neutron star after it is formed can, through close encounters with planets, enter a region of magnetic drag near the star. This region is larger than the star's collisional cross section; it is approximately 10 to the 10th cm in radius and hence produces an interesting rate if even only a small fraction of all neutron stars are responsible for these bursts. The 1979 March 5 burst is interpreted in this context, and all of the observational constraints except for its suggested association with N49 in the LMC can be satisfied. The model predicts that gamma-ray bursts have a low luminosity (10 to the 35th ergs/s) X-ray precursor of fairly long duration (10,000 s).
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