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Title: EMPIRICAL DETERMINATION OF THE ENERGY LOSS RATE OF ACCELERATED ELECTRONS IN A WELL-OBSERVED SOLAR FLARE

Abstract

We present electron images of an extended solar flare source, deduced from RHESSI hard X-ray imaging spectroscopy data. We apply the electron continuity equation to these maps in order to determine empirically the form of the energy loss rate for the bremsstrahlung-emitting electrons. We show that this form is consistent with an energy transport model involving Coulomb collisions in a target with a temperature of about 2 Multiplication-Sign 10{sup 7} K, with a continuous injection of fresh deka-keV electrons at a rate of approximately 10{sup -2} electrons s{sup -1} per ambient electron.

Authors:
; ; ;  [1];  [2]
  1. Dipartimento di Matematica, Universita di Genova, Genova, via Dodecaneso 35, 16146 Genova (Italy)
  2. Department of Physics and Astronomy, Western Kentucky University, Bowling Green, KY 42101 (United States)
Publication Date:
OSTI Identifier:
22037156
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 751; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; BREMSSTRAHLUNG; CONTINUITY EQUATIONS; ELECTRON COLLISIONS; ELECTRONS; ENERGY LOSSES; GAMMA RADIATION; HARD X RADIATION; IMAGES; ION COLLISIONS; KEV RANGE; SOLAR FLARES; SUN; X-RAY SPECTROSCOPY

Citation Formats

Torre, Gabriele, Pinamonti, Nicola, Guo, Jingnan, Piana, Michele, Emslie, A Gordon, and Massone, Anna Maria, E-mail: torre@dima.unige.it, E-mail: pinamont@dima.unige.it, E-mail: guo@pitagora.dima.unige.it, E-mail: piana@dima.unige.it, E-mail: emslieg@wku.edu, E-mail: annamaria.massone@cnr.it. EMPIRICAL DETERMINATION OF THE ENERGY LOSS RATE OF ACCELERATED ELECTRONS IN A WELL-OBSERVED SOLAR FLARE. United States: N. p., 2012. Web. doi:10.1088/0004-637X/751/2/129.
Torre, Gabriele, Pinamonti, Nicola, Guo, Jingnan, Piana, Michele, Emslie, A Gordon, & Massone, Anna Maria, E-mail: torre@dima.unige.it, E-mail: pinamont@dima.unige.it, E-mail: guo@pitagora.dima.unige.it, E-mail: piana@dima.unige.it, E-mail: emslieg@wku.edu, E-mail: annamaria.massone@cnr.it. EMPIRICAL DETERMINATION OF THE ENERGY LOSS RATE OF ACCELERATED ELECTRONS IN A WELL-OBSERVED SOLAR FLARE. United States. https://doi.org/10.1088/0004-637X/751/2/129
Torre, Gabriele, Pinamonti, Nicola, Guo, Jingnan, Piana, Michele, Emslie, A Gordon, and Massone, Anna Maria, E-mail: torre@dima.unige.it, E-mail: pinamont@dima.unige.it, E-mail: guo@pitagora.dima.unige.it, E-mail: piana@dima.unige.it, E-mail: emslieg@wku.edu, E-mail: annamaria.massone@cnr.it. 2012. "EMPIRICAL DETERMINATION OF THE ENERGY LOSS RATE OF ACCELERATED ELECTRONS IN A WELL-OBSERVED SOLAR FLARE". United States. https://doi.org/10.1088/0004-637X/751/2/129.
@article{osti_22037156,
title = {EMPIRICAL DETERMINATION OF THE ENERGY LOSS RATE OF ACCELERATED ELECTRONS IN A WELL-OBSERVED SOLAR FLARE},
author = {Torre, Gabriele and Pinamonti, Nicola and Guo, Jingnan and Piana, Michele and Emslie, A Gordon and Massone, Anna Maria, E-mail: torre@dima.unige.it, E-mail: pinamont@dima.unige.it, E-mail: guo@pitagora.dima.unige.it, E-mail: piana@dima.unige.it, E-mail: emslieg@wku.edu, E-mail: annamaria.massone@cnr.it},
abstractNote = {We present electron images of an extended solar flare source, deduced from RHESSI hard X-ray imaging spectroscopy data. We apply the electron continuity equation to these maps in order to determine empirically the form of the energy loss rate for the bremsstrahlung-emitting electrons. We show that this form is consistent with an energy transport model involving Coulomb collisions in a target with a temperature of about 2 Multiplication-Sign 10{sup 7} K, with a continuous injection of fresh deka-keV electrons at a rate of approximately 10{sup -2} electrons s{sup -1} per ambient electron.},
doi = {10.1088/0004-637X/751/2/129},
url = {https://www.osti.gov/biblio/22037156}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 751,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2012},
month = {Fri Jun 01 00:00:00 EDT 2012}
}