The radio, optical, X-ray, gamma-ray star LSI +61 deg 303

Details The radio, optical, X-ray, gamma-ray star LSI +61 deg 303 The radio, optical, X-ray, gamma-ray star LSI +61 deg 303

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84.1030g&link_type=abstract

Astronomical Journal, vol. 84, July 1979, p. 1030-1036.

Astronomy and Astrophysics

Astronomy

77

Gamma Ray Astronomy, Radio Stars, Stellar Spectrophotometry, Variable Stars, Visual Observation, X Ray Sources, Astronomical Spectroscopy, B Stars, Brightness Temperature, H Alpha Line, H Beta Line, Light Curve, Radio Astronomy, Radio Spectra

Scientific paper

The highly variable radio source, GT 0236+610, previously reported as a possible counterpart for the gamma-ray source CG 135+1, is identified with a B0-1 star (LSI +61 deg 303) having unusually broad H-alpha and H-beta emission lines. High-time-resolution radio observations imply that the size of the radio emitting region is no more than 3 AU and that the radio brightness temperature is about 10 billion K. The Harvard patrol plates that provide a photometric history of the star back to 1887 show optical variations but no remarkable activity

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