Radio emission from FK Comae

Details Radio emission from FK Comae Radio emission from FK Comae

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313..263h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 313, Feb. 1, 1987, p. 263-267.

Astronomy and Astrophysics

Astrophysics

20

Emission Spectra, Radio Spectra, Stellar Models, Stellar Spectrophotometry, Variable Stars, Centimeter Waves, Radiant Flux Density, Stellar Rotation, X Ray Spectra

Scientific paper

Radio detection of the rapidly rotating, variable star FK Comae is reported. Observations were made at 20 cm and 6 cm, and 7 days later at 6 cm and 2 cm. The flux density at 6 cm on both days was essentially the same, and it is believed that the flux densities at the three wavelengths determine the spectrum. It is argued, on the basis of the radio spectrum and the observed X-ray flux, that the radiation cannot be thermal, and probably arises from the acceleration of electrons in coronal streamers. A model is derived for this nonthermal component.

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