Electron beam bombardment of the chromosphere in a flare loop with electric currents.

Details Electron beam bombardment of the chromosphere in a flare loop with electric currents. Electron beam bombardment of the chromosphere in a flare loop with electric currents.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...298..913k&link_type=abstract

Astronomy and Astrophysics, v.298, p.913

Astronomy and Astrophysics

Astrophysics

5

Mhd, Sun: Chromosphere, Flares, Transition Region

Scientific paper

In a flare loop with electric current and corresponding Ohm electric field the electron beam bombardment of chromospheric layers is considered. It is assumed that the electric current, which is generated during the slow evolution before a flare, flows along current filaments in the flare loop and all current densities in these filaments are below any thresholds of current instabilities. The convergence of magnetic field below transition region and its influence on current densities in current filaments are considered. The Ohm electric field in the VAL-model chromosphere is determined and compared with the electric field equivalent to collisional losses of the 30-100keV electrons at these layers. It was found that for sufficiently high current densities and electron energies the Ohm electric field can be greater than that of collisional one, mainly at upper chromosphere. Using a numerical model of electron beam bombardment in a flare loop, the energy changes of initially 100keV electrons during their penetration into the chromosphere in the case with and without the presence of electric current are computed. The significance of these effects and their influences on interpretations of hard X-ray emission and evaporation process are discussed.

Affiliated with

Also associated with

No associations

Rating

Electron beam bombardment of the chromosphere in a flare loop with electric currents. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electron beam bombardment of the chromosphere in a flare loop with electric currents., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron beam bombardment of the chromosphere in a flare loop with electric currents. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1201265