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arXiv · 1710.08008

Origin of the Blue Continuum Radiation in the Flare Spectra of dMe stars

E. S. Morchenko
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Abstract

Calculations of the emission spectrum of a homogeneous plane layer of pure hydrogen plasma taking into account nonlinear effects (the influence of bremsstrahlung and recombination radiation of the layer itself on its Menzel factors) [Morchenko et al., Ap&SS, Vol. 357, article id. 119 (2015)] show that the blue component of the optical continuum during the impulsive phase of large flares on dMe stars originates from the near-photospheric layers [Grinin and Sobolev, Afz, Vol. 13, 587 (1977)]. The gas behind the front of a stationary radiative shock wave propagating in the red dwarf chromosphere toward the photosphere is not capable of generating the blackbody radiation observed at the maximum brightness of the flares.

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E. S. Morchenko. 2017-10-22. Origin of the Blue Continuum Radiation in the Flare Spectra of dMe stars. https://doi.org/10.1007/s10511-016-9450-9

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