Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...267..280h&link_type=abstract
Astrophysical Journal, Part 1, vol. 267, Apr. 1, 1983, p. 280-290.
Astronomy and Astrophysics
Astrophysics
96
Flare Stars, Heao 2, Iue, Stellar Coronas, Stellar Flares, X Ray Sources, Coronal Loops, Solar Corona, Stellar Luminosity, Stellar Temperature, Ultraviolet Spectra
Scientific paper
The Einstein Imaging Particle Counter observed a major X-ray flare in its entirety during a 5-hr period of simultaneous observations, with the IUE, of the dM5e flare star Proxima Centauri in August, 1980. The detailed X-ray light curve, temperature determinations during various intervals, and UV line fluxes obtained before, during, and after the flare indirectly indicate a 'two-ribbon flare' prominence eruption. The calculated ratio of coronal to bolometric luminosity for the event is about 100 times the solar ratio. The Proxima Cen corona is analyzed in the context of static loop models, in light of which it is concluded that less than 6% of the stellar surface seems to be covered by X-ray emitting active regions.
Antiochos Spiro K.
Bornmann Pat L.
Golub Leon
Haisch Bernard M.
Linsky Jeffrey L.
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