Počet záznamů: 1

On the Probable Existence of an Abrupt Magnetization in the Upper Chromosphere of the Quiet Sun

  1. 1.
    0355114 - ASU-R 2011 RIV US eng J - Článek v odborném periodiku
    Štěpán, Jiří - Trujillo Bueno, J.
    On the Probable Existence of an Abrupt Magnetization in the Upper Chromosphere of the Quiet Sun.
    Astrophysical Journal Letters. Roč. 711, č. 2 (2010), L133-L137 ISSN 2041-8205
    Výzkumný záměr: CEZ:AV0Z10030501
    Klíčová slova: magnetic fields * polarization * radiative transfer
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
    Impakt faktor: 1.020, rok: 2010

    We report on a detailed radiative transfer modeling of the observed scattering polarization in the Hα line, which allows us to infer quantitative information on the magnetization of the quiet solar chromosphere. Our analysis suggests the presence of a magnetic complexity zone with a mean field strength langBrang > 30 G lying just below the sudden transition region to the coronal temperatures. The chromospheric plasma directly underneath is very weakly magnetized, with langBrang ~ 1 G. The possible existence of this abrupt change in the degree of magnetization of the upper chromosphere of the quiet Sun might have large significance for our understanding of chromospheric (and, therefore, coronal) heating.
    Trvalý link: http://hdl.handle.net/11104/0193957