Počet záznamů: 1
Shock-drift accelerated electrons and n-distribution
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SYSNO ASEP 0463131 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Shock-drift accelerated electrons and n-distribution Tvůrce(i) Vandas, Marek (ASU-R) RID, ORCID
Karlický, Marian (ASU-R) RID, ORCIDZdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 591, July (2016), A127/1-A127/6Poč.str. 6 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova shock waves ; acceleration of particles ; Sun flares Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GA14-19376S GA ČR - Grantová agentura ČR GA15-17490S GA ČR - Grantová agentura ČR GAP209/12/0103 GA ČR - Grantová agentura ČR Institucionální podpora ASU-R - RVO:67985815 UT WOS 000379141300136 EID SCOPUS 84977110680 DOI 10.1051/0004-6361/201527183 Anotace By analyzing soft X-ray spectra observed during the impulsive phase of several solar flares, the n-distribution function of superthermal electrons has been detected. In the paper we try to answer the question of whether electrons with this type of distribution function can be produced in a shock, e.g. in a flare termination shock. We use analytical and numerical methods to compute distribution functions of electrons accelerated by a shock. We analytically derive the distribution functions of reflected electrons at quasi-perpendicular shocks. We also consider the influence of the electrostatic cross-shock potential, shock curvature, and the role of the upstream seed population on these distributions. The computed distributions are compared with the n-distributions. We found that a high-energy part of the distribution of electrons reflected at a quasi-perpendicular shock can be very well fitted by the n-distribution in all the cases we studied. This provides a chance to detect the flare termination shock. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2017
Počet záznamů: 1