Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.271..634d&link_type=abstract
Nature, vol. 271, Feb. 16, 1978, p. 634, 635. Research supported by the IBM Corp. and Radcliffe Trust.
Astronomy and Astrophysics
Astronomy
10
Companion Stars, Early Stars, Gamma Ray Astronomy, Neutron Stars, Stellar Rotation, Bolometers, Relativistic Particles, Satellite Observation, Spaceborne Astronomy, Spin Reduction, Stellar Atmospheres, Stellar Winds
Scientific paper
Satellite observations of gamma-ray source CG 195 + 4 have revealed a period of 59s, increasing at a rate of P = 2 x 10 to the -9th. If the proposed explanation for the increase is correct, i.e., that the neutron star is being spun down in a weak stellar wind, then there is likely to be a companion early star nearby. Gamma Geminorum is presented as such a star. A description of its characteristics is given, including: 3 solar masses, bolometric luminosity of 6 x 10 to the 35th ergs/sec, distance from CG 195 + 4 equal to 3.5 x 10 to the 11th cm, and an orbital period of 1.5d. The production of gamma rays is accounted for by relativistic electrons released in magnetic field interactions with the stellar atmosphere.
Davies Richard E.
Fabian Andrea C.
Pringle James E.
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