Hard X-ray emission of solar flares and non-stationary kinetics of electron beams.

Details Hard X-ray emission of solar flares and non-stationary kinetics of electron beams. Hard X-ray emission of solar flares and non-stationary kinetics of electron beams.

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...308..924c&link_type=abstract

Astronomy and Astrophysics, v.308, p.924-928

Astronomy and Astrophysics

Astrophysics

6

Sun: Activity, Sun: Flares, Sun: X-Rays Polarization

Scientific paper

Fine time structure is found in hard X-ray observations of solar flares. To explain the temporal evolution of hard X-ray flux and polarization degree, we present a time-dependent solution of the electron kinetic equation. We assume a non-thermal thick-target model for hard X-rays in a uniform magnetic field and homogeneous medium. Analytical expressions are obtained for a rectangular injection electron impulse and applied to an estimate of hard X-ray bremsstrahlung characteristics. We emphasize the difference in shape between the injection impulse and the X-ray response profiles. X-ray flux and polarization degree vary with time.

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