Dynamics of electron beams in a coronal loop and the hard X-ray burst

Details Dynamics of electron beams in a coronal loop and the hard X-ray burst Dynamics of electron beams in a coronal loop and the hard X-ray burst

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..104..363t&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 104, April 1986, p. 363-389.

Physics

15

Coronal Loops, Electron Beams, Solar X-Rays, Astrodynamics, Fokker-Planck Equation, Solar Magnetic Field, Spatial Distribution, X Ray Spectra

Scientific paper

The dynamics of energetic electrons produced around the top of a corona loop with rather high plasma density are numerically simulated. The time variations of both the spatial intensity distribution and the spectrum of the hard X-rays are compared with observations in order to find the important physical parameters for the dynamics of electrons which produce X-rays. It is found that if the column density along the model corona loop is greater than 10 to 20th/sq cm, a quasi-steady decay of the X-rays appears in the decay phase. In this case, the X-ray distribution along the loop shows a broad intensity maximum away from the loop-top giving an extended X-ray source structure, and spectral hardness is kept constant. These characteristics are similar to the solar gradual hard X-ray bursts.

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