Počet záznamů: 1  

Upper chromospheric magnetic field of a sunspot penumbra: observations of fine structure

  1. 1.
    0470624 - ASÚ 2017 RIV FR eng J - Článek v odborném periodiku
    Joshi, J. - Lagg, A. - Solanki, S.K. - Feller, A. - Collados Vera, M. - Orozco Suárez, D. - Schlichenmaier, R. - Franz, M. - Balthasar, H. - Denker, C. - Berkefeld, T. - Hofmann, A. - Kiess, C. - Nicklas, H. - Pastor Yabar, A. - Rezaei, R. - Schmidt, D. - Schmidt, W. - Sobotka, Michal - Soltau, D. - Staude, J. - Strassmeier, K.G. - Volkmer, R. - von der Lühe, O. - Waldmann, T.A.
    Upper chromospheric magnetic field of a sunspot penumbra: observations of fine structure.
    Astronomy & Astrophysics. Roč. 596, December (2016), A8/1-A8/8. ISSN 0004-6361. E-ISSN 1432-0746
    GRANT EU: European Commission(XE) 312495 - SOLARNET
    Institucionální podpora: RVO:67985815
    Klíčová slova: Sun * activity * sunspots
    Obor OECD: Astronomy (including astrophysics,space science)
    Impakt faktor: 5.014, rok: 2016

    The fine-structure of the magnetic field in a sunspot penumbra in the upper chromosphere is to be explored and compared to that in the photosphere. We find that the inclination of the magnetic field varies in the azimuthal direction in the photosphere and in the upper chromosphere. The chromospheric variations coincide remarkably well with the variations in the inclination of the photospheric field and resemble the well-known spine and interspine structure in the photospheric layers of penumbrae. The typical peak-to-peak variations in the inclination of the magnetic field in the upper chromosphere are found to be 10 degrees-15 degrees, which is roughly half the variation in the photosphere. In contrast, the magnetic field strength of the observed penumbra does not vary on small spatial scales in the upper chromosphere.
    Trvalý link: http://hdl.handle.net/11104/0268206

     
     
Počet záznamů: 1  

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