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ROSAT Observation of a Giant X-ray Flare on the Active Binary Algol

Published online by Cambridge University Press:  12 April 2016

R. Ottmann
R. Ottmann*
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, 85748 Garching, Germany

Abstract

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ROSAT/PSPC observations of a long-duration, giant X-ray flare on the eclipsing binary Algol are presented. With a total thermally radiated energy of 7 Ŀ 1036 erg, this flare is one of the largest events ever observed. The flare decay is modeled by means of the quasi-static cooling method, which yields a height of the flare loop arcade of ≃ 1RK, and a plasma density of 1011 cm−3.

Type
Flares in Late-type Stars: UV and X-ray
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 164 - 167
Copyright
Copyright © Springer-Verlag 1995

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