Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.290..378m&link_type=abstract
Nature, vol. 290, Apr. 2, 1981, p. 378-382.
Astronomy and Astrophysics
Astronomy
243
Annihilation Reactions, Bursts, Cyclotron Radiation, Energy Spectra, Gamma Ray Astronomy, Gamma Ray Spectra, Neutron Stars, Absorption Spectra, Emission Spectra, Line Spectra, Stellar Magnetic Fields, Venera Satellites, X Ray Sources
Scientific paper
Venera 11 and Venera 12 have detected emission and absorption lines in the energy spectra of many gamma-ray bursts. The similarity between the spectral features observed during different events reveals the similarity in physical conditions and processes which occur within the burst sources. These lines are the most convincing evidence that the gamma-burst sources contain neutron stars with a strong magnetic field. Results of a comprehensive analysis that included weaker bursts are presented which indicate that the presence of lines in the gamma-burst spectra, in particular of absorption lines in the region 30-70 keV, is characteristic rather than an exceptional feature.
Aptekar' R. L.
Golenetskii Sergey V.
Gurian Iu. A.
Il'inskii V. N.
Mazets E. P.
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