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Detection of a stellar flare at extreme ultraviolet wavelengths (1991)

Gonzalez-Riestra, R. ; Pye, J. P. ; Bromage, G. E. ; [et al.]

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Publication Date: 2011-08-19

Description: 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.

Keywords: ASTROPHYSICS

Type: Nature (ISSN 0028-0836); 353; 635-637

Format: text

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