Magnetized neutron stars as gamma-ray bursters - Detection rates at high energies

Details Magnetized neutron stars as gamma-ray bursters - Detection rates at high energies Magnetized neutron stars as gamma-ray bursters - Detection rates at high energies

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337l..23m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 337, Feb. 1, 1989, p. L23-L27. Research supported by Rockwell Int

Astronomy and Astrophysics

Astrophysics

11

Gamma Ray Bursts, Magnetic Stars, Neutron Stars, Cyclotron Radiation, Emission Spectra, Energetic Particles, Field Strength, Gravitational Effects, Stellar Magnetospheres

Scientific paper

Detailed calculations of the escape of high-energy gamma-rays from the dipolar magnetosphere of general relativistic neutron star models are used to model the detection rate of bursters at high photon energies between 0.3 and 10 MeV. This analysis shows the SMM detection rates to be compatible with a magnetized neutron star origin, with a distribution of magnetic field strengths extending at least up to about 4 x 10 to the 12th G, as expected if the (20-60) keV features reported from Konus and Ginga measurements are interpreted as cyclotron lines. Additional implications are discussed for the emission geometry and the neutron star radius.

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