Influence of stellar flare X-rays on the optical light curve

Details Influence of stellar flare X-rays on the optical light curve Influence of stellar flare X-rays on the optical light curve

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..179m&link_type=abstract

Astrophysical Journal, Part 1, vol. 212, Feb. 15, 1977, p. 179-185.

Astronomy and Astrophysics

Astrophysics

12

Light Curve, Stellar Flares, Variable Stars, X Ray Spectra, Bremsstrahlung, Incident Radiation, Plasma Decay

Scientific paper

The steady-state interaction of an incident flux of bremsstrahlung X-rays with the optically thick atmosphere of a flare star is computed. A significant fraction of the incident flux is converted into nonionizing photons. The emerging optical radiation has colors which, when combined with previously estimated colors of radiation emitted directly by the flare region, are in the correct sense to account for the evolution of decaying flare light in the two-color diagram. Emission lines contribute up to 10% of the intensity in the B filter. Red asymmetries of the emission lines may be associated with radiation pressure.

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