Simulations of the CA XIX spectral emission from a flaring solar coronal loop. II - Impulsive heating by accelerated electrons

Details Simulations of the CA XIX spectral emission from a flaring solar coronal loop. II - Impulsive heating by accelerated electrons Simulations of the CA XIX spectral emission from a flaring solar coronal loop. II - Impulsive heating by accelerated electrons

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413..786a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 2, p. 786-797.

Astronomy and Astrophysics

Astrophysics

22

Coronal Loops, Electron Beams, Plasma Heating, Solar Flares, Solar Spectra, Electron Energy, Emission Spectra, Spectrum Analysis, Stellar Models

Scientific paper

In this paper we analyze the response of the plasma inside a coronal loop to the passage of a beam of accelerated electrons and study it systematically as a function of the parameters and temporal profile of the beam, as well as of the initial conditions of the corona. Our approach consists in computing the spectral emission from an impulsively heated loop in the Ca XIX line complex in the range 3.165-3.231 A and in analyzing the simulated spectra with the same technique used for the observations. This allows a direct comparison of the simulations with the results of the spectral observations of the Bent Crystal Spectrometer on board the SMM. While in some cases the values and evolution of average plasma properties, as derived from the analysis of spectra, are reproduced with good accuracy, the detailed shape of the Ca XIX lines cannot be accurately reproduced by this kind of model of flares heated by nonthermal electron beams.

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