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White-light continuum in stellar flares

Published online by Cambridge University Press:  09 September 2016

Adam F. Kowalski
Adam F. Kowalski*
Affiliation:
Department of Astronomy, University of Maryland, Stadium Drive, College Park, MD 20742, USA email: adam.f.kowalski@nasa.gov NASA Goddard Space Flight Center, Heliophysics Science Division, Code 671, 8800 Greenbelt Rd., Greenbelt, MD 20771, USA
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Abstract

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In this talk, we discuss the formation of the near-ultraviolet and optical continuum emission in M dwarf flares through the formation of a dense, heated chromospheric condensation. Results are used from a recent radiative-hydrodynamic model of the response of an M dwarf atmosphere to a high energy flux of nonthermal electrons. These models are used to infer the charge density and optical depth in continuum emitting flare layers from spectra covering the Balmer jump and optical wavelength regimes. Future modeling and observational directions are discussed.

Keywords

acceleration of particlesatomic processeshydrodynamicsradiative transferstars: flarelow-masschromospheresSun: flares

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