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Abstract:

We numerically solve the relativistic Fokker-Planck equation for a beam of accelerated electrons impinging on the solar chromosphere, for several cases relevant to solar flares. We make a detailed comparison between our results and those obtained from the test-particle approach. We find that the inclusion of velocity diffusion changes significantly not only the resulting distribution function but also macroscopic quantities like the energy deposition rate and the hard X-ray emission. We find that the beam energy is deposited in a deeper and much broader region of the atmosphere. Also, our computations predict a harder and larger hard X-ray emission. These results might be relevant to the long-standing controversy between the thermal and the nonthermal models for the X-ray production, as well as to the study of the acceleration mechanisms of electron beams. © 1997. The American Astronomical Society. All rights reserved.

Registro:

Documento: Artículo
Título:Fokker-planck description of electron beams in the solar chromosphere
Autor:Mauas, P.J.D.; Gómez, D.O.
Filiación:Instituto de Astronomía y Física del Espacio, CC 67, Suc. 28 (1428), Buenos Aires, Argentina
Carrera del Investigador, CONICET, Argentina
Departamento de Física, Universidad de Buenos Aires, Argentina
Palabras clave:Acceleration of particles; Sun: chromosphere; Sun: X-rays, gamma rays
Año:1997
Volumen:483
Número:1 PART I
Página de inicio:496
Página de fin:506
DOI: http://dx.doi.org/10.1086/304203
Título revista:Astrophysical Journal
Título revista abreviado:Astrophys. J.
ISSN:0004637X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v483_n1PARTI_p496_Mauas

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Citas:

---------- APA ----------
Mauas, P.J.D. & Gómez, D.O. (1997) . Fokker-planck description of electron beams in the solar chromosphere. Astrophysical Journal, 483(1 PART I), 496-506.
http://dx.doi.org/10.1086/304203
---------- CHICAGO ----------
Mauas, P.J.D., Gómez, D.O. "Fokker-planck description of electron beams in the solar chromosphere" . Astrophysical Journal 483, no. 1 PART I (1997) : 496-506.
http://dx.doi.org/10.1086/304203
---------- MLA ----------
Mauas, P.J.D., Gómez, D.O. "Fokker-planck description of electron beams in the solar chromosphere" . Astrophysical Journal, vol. 483, no. 1 PART I, 1997, pp. 496-506.
http://dx.doi.org/10.1086/304203
---------- VANCOUVER ----------
Mauas, P.J.D., Gómez, D.O. Fokker-planck description of electron beams in the solar chromosphere. Astrophys. J. 1997;483(1 PART I):496-506.
http://dx.doi.org/10.1086/304203