Exosat Observations of Quiescent and Flaring Emission from M Dwarf Flare Stars

  • R. Pallavicini
Part of the Astrophysics and Space Science Library book series (ASSL, volume 143)


We present preliminary results of a comprehensive survey of X-ray observations of M dwarf flare stars obtained with the EXOSAT satellite. We discuss quiescent and flaring emission, and we provide evidence for the occurrence on stars of both short-lived and long-duration events, closely resembling compact and 2-ribbon flares on the Sun. We study time variability of these sources on a variety of time scales and we conclude that there is no observational evidence in EXOSAT data for continuous low-level microflaring activity of the type recently suggested as a mechanism of coronal heating in M dwarf flare stars.


Variability Analysis Coronal Heating Flare Star Flaring Emission Exponential Decay Time 
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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • R. Pallavicini
    • 1
  1. 1.Osservatorio Astrofisico di ArcetriFirenzeItaly

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