Einstein X-ray observations of Proxima Centauri and the surrounding region

Details Einstein X-ray observations of Proxima Centauri and the surrounding region Einstein X-ray observations of Proxima Centauri and the surrounding region

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242l..99h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 242, Dec. 1, 1980, p. L99-L103. Research supported by the Smithsonia

Astronomy and Astrophysics

Astronomy

38

Flare Stars, Stellar Coronas, X Ray Astronomy, X Ray Stars, Stellar Envelopes, Stellar Luminosity, Stellar Models

Scientific paper

The first detection of both quiescent and flaring soft X-ray emission from a dMe flare star, Proxima Centauri (dM5e) is reported. The data are analyzed for temporal variability and spectral characteristics. The quiescent state is characterized by a mean X-ray luminosity of 1.5 x 10 to the 27th erg s/s, corresponding to a mean surface flux of 700,000 erg s/sq cm-s, and an inferred temperature of 4-million K. The flare that is detected has a peak flux of 7.4 x 10 to the 27th erg s/s and a peak temperature of 17-million K. The implications of these data for models of the quiescent and flare coronae of dMe stars are discussed.

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