Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981assl...87....1v&link_type=abstract
In: X-ray astronomy with the Einstein satellite; Proceedings of the Meeting, Cambridge, MA, January 28-30, 1980. (A82-33476 16-9
Astronomy and Astrophysics
Astronomy
4
Atmospheric Heating, Heao 2, Solar Corona, Stellar Magnetic Fields, Stellar Radiation, X Ray Sources, Hertzsprung-Russell Diagram, Stellar Evolution, Stellar Luminosity, Stellar Spectra, Stellar Structure
Scientific paper
Results are presented from an extensive survey of stellar X-ray emission, using the Einstein Observatory. Over 140 stars have been detected to date, throughout the H-R diagram, thus showing that soft X-ray emission is the norm rather than the exception for stars in general. This finding is strongly at odds with pre-Einstein expectations based on standard acoustic theories of coronal heating. Typical examples of stellar X-ray detections and an overview of the survey data are presented. In combination with recent results from solar X-ray observations, the new Einstein data argue for the general applicability of magnetic field-related coronal heating mechanisms.
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