Radio observations of CYG X-1 during the 1977 campaign

Details Radio observations of CYG X-1 during the 1977 campaign Radio observations of CYG X-1 during the 1977 campaign

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....84..379w&link_type=abstract

Astronomy and Astrophysics, vol. 84, no. 3, Apr. 1980, p. 379-382.

Astronomy and Astrophysics

Astronomy

3

Binary Stars, Centimeter Waves, Cygnus Constellation, Radio Astronomy, Radio Stars, X Ray Sources, Radiant Flux Density, Radio Emission, Radio Spectra, Variability

Scientific paper

Radio observations of Cygnus X-1 at 2.8 cm, 6 cm, and 11 cm were made during the international observational campaign of August 1977. The observed average levels of radio emission were higher than normal for this source, and the optically-thin (non-thermal) spectral index of alpha = -0.5 observed on two days is highly unusual. No variability on a time scale of hours was observed although clear evidence of day-to-day variability was seen.

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