Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....75..303p&link_type=abstract
Astronomy and Astrophysics, vol. 75, no. 3, June 1979, p. 303-310.
Astronomy and Astrophysics
Astronomy
8
Galactic Radiation, Gamma Ray Astronomy, Milky Way Galaxy, Pulsars, Supernova Remnants, X Ray Sources, Neutron Stars, Spiral Galaxies, Stellar Rotation
Scientific paper
The relationship between galactic gamma-ray sources (GRS) and their possible stellar progenitors is examined in order to gain insight into the nature and properties of the GRS. It is assumed that all GRS constitute one class of sources (at least in a statistical sense), that GRS represent a final stage in the evolution of stars that die in supernova explosions, and that the galactic distribution of the progenitor stars is the same as that of the GRS. The possibilities are considered that GRS are disk-population objects evenly distributed throughout the disk or are younger objects somehow associated with the spiral structure of the Galaxy. Based on a comparison of the observed and derived properties of 13 GRS with those of pulsars and supernova remnants, it is concluded that the GRS are most likely identified with rapidly rotating neutron stars (periods less than or about 0.1 s) that are quickly slowing down (at rates of at least about 5 ns/day) and that the GRS have been produced in supernova explosions of progenitors with maximum masses of 5 to 9 solar masses.
Panagia Nino
Zamorani Gianni
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