X-ray observations of Algol

Details X-ray observations of Algol X-ray observations of Algol

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239l..69w&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 239, July 15, 1980, p. L69-L71.

Astronomy and Astrophysics

Astrophysics

28

Eclipsing Binary Stars, Stellar Coronas, Stellar Spectra, X Ray Sources, Flux Density, K Stars, Solid State Devices, Spectrometers, Stellar Luminosity, Stellar Models, Stellar Temperature, Temperature Distribution

Scientific paper

The Solid State Spectrometer on Einstein has been used to study Algol. Two observations six months apart were made, both including a primary optical eclipse. No corresponding X-ray eclipses were seen. During the second observation the source was flaring and was on the average a factor of three brighter. The spectrum on both occasions was consistent with a two-component thermal equilibrium model with temperatures of approximately 7.5 and 40 million degrees. Attempts to insert a third component indicate the temperature distribution to be bimodal. Models for the X-ray emission are discussed and it is suggested that it most likely originates from an active corona surrounding the K star.

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