A simultaneous X-ray and radio observation of a flare from Algol
Parmar, A. N.; White, N. E.; Culhane, J. L.; van den Oord, G. H. J.
Netherlands, United Kingdom
Abstract
An X-ray flare was observed from Algol using the low and medium energy detectors on the European Space Agency's EXOSAT observatory. Spectra obtained during the flare are well fitted by thermal continua while an Fe XXV emission feature was also detected. The strength of this feature indicates a cosmic abundance for iron. The data indicate that the flare occurred in a loop of height approximately 0.25 of the K star radius & with a magnetic field >300 Gauss.