June 1999 from the BeppoSAX Calendar
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Wide-band X-ray spectrum and 2-10 keV lightcurve of AB Doradus and Algol,
a rapidly rotating young star and an eclipsing binary system.
Large flare events, followed for their
entire duration, were detected in both cases. These observations show
for the first time that hard X-ray emission (>20 keV) is produced during
stellar flares. Courtesy of R. Pallavicini, Palermo
Observatory, G. Tagliaferri Brera-Merate Observatory, F. Favata,
Space Science Department of ESA and J. Schmitt, University of Hamburg,
Germany
Images courtesy of the Agenzia Spaziale Italiana (ASI) and the
BeppoSAX Science Data Center (SDC).
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