Adiabatic heating in impulsive solar flares

Details Adiabatic heating in impulsive solar flares Adiabatic heating in impulsive solar flares

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7731063m&link_type=abstract

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Physics

Plasma Physics

Adiabatic Conditions, Heating, Photosphere, Solar Flares, Bremsstrahlung, Microwave Emission, Plasma Physics, X Ray Spectra

Scientific paper

The dynamic X-ray spectra of two simple, impulsive solar flares are examined together with H alpha, microwave and meter wave radio observations. X-ray spectra of both events were characteristic of thermal bremsstrahlung from single temperature plasmas. The symmetry between rise and fall was found to hold for the temperature and emission measure. The relationship between temperature and emission measure was that of an adiabatic compression followed by adiabatic expansion; the adiabatic index of 5/3 indicated that the electron distribution remained isotropic. Observations in H alpha provided further evidence for compressive energy transfer.

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