Detection of a stellar flare at extreme ultraviolet wavelengths

Details Detection of a stellar flare at extreme ultraviolet wavelengths Detection of a stellar flare at extreme ultraviolet wavelengths

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.353..635b&link_type=abstract

Nature (ISSN 0028-0836), vol. 353, Oct. 17, 1991, p. 635-637. Research supported by SERC, NASA, and ESA.

Astronomy and Astrophysics

Astronomy

6

Binary Stars, Extreme Ultraviolet Radiation, Stellar Flares, Ultraviolet Astronomy, Iue, Rosat Mission, Sky Surveys (Astronomy), Stellar Luminosity, Stellar Rotation

Scientific paper

During the all-sky survey conducted by the Rosat Wide Field Camera, the binary flare star system BY Draconis was monitored with coverage by the IUE satellite far-UV and optical observations and by the Rosat X-ray telescope for part of the time. A stellar flare was detected in all four wavebands. This is the first unambiguous EUV detection of a flare and one of the widest simultaneous wavelength-range coverages obtained. The peak luminosity and total energy of this flare in the photon energy range 0.08-0.18 keV are comparable with the values obtained for a number of flares integrated over a larger energy range by Exosat satellite observations in 1983-86. It is concluded that radiation in the EUV carries away a substantial fraction of the total flare energy.

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