0470339 - ASÚ 2017 RIV FR eng J - Článek v odborném periodiku
Vocks, C. - Dzifčáková, Elena - Mann, G.
Suprathermal electron distributions in the solar transition region.
Astronomy & Astrophysics. Roč. 596, December (2016), A41/1-A41/5. ISSN 0004-6361. E-ISSN 1432-0746
Grant CEP: GA ČR GAP209/12/1652
Institucionální podpora: RVO:67985815
Klíčová slova: Sun * transition region * plasmas
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.014, rok: 2016 ; AIS: 1.581, rok: 2016
DOI: https://doi.org/10.1051/0004-6361/201629209

e calculate the evolution of a coronal electron distribution through the transition region in order to quantify the suprathermal electron population there. A kinetic model for electrons is used, which is based on solving the Boltzmann-Vlasov equation for electrons including Coulomb collisions with both ions and electrons. Initial and chromospheric boundary conditions are Maxwellian VDFs with densities and temperatures based on a background fluid model. The coronal boundary condition has been adopted from earlier studies of suprathermal electron formation in coronal loops. The model results show the presence of strong suprathermal tails in transition region electron VDFs, starting at energies of a few 10 eV. Above electron energies of 600 eV, electrons can traverse the transition region essentially collision-free.


Trvalý link: http://hdl.handle.net/11104/0268009