0470640 - ASÚ 2017 RIV FR eng J - Článek v odborném periodiku
Franz, M. - Collados Vera, M. - Bethge, K. - Schlichenmaier, R. - Borrero, J.M. - Schmidt, W. - Lagg, A. - Solanki, S.K. - Berkefeld, T. - Kiess, C. - Rezaei, R. - Schmidt, D. - Sigwarth, M. - Soltau, D. - Volkmer, R. - von der Lühe, O. - Waldmann, T.A. - Orozco Suárez, D. - Pastor Yabar, A. - Denker, C. - Balthasar, H. - Staude, J. - Hofmann, A. - Strassmeier, K.G. - Feller, A. - Nicklas, H. - Kneer, F. - Sobotka, Michal
Magnetic fields of opposite polarity in sunspot penumbrae.
Astronomy & Astrophysics. Roč. 596, December (2016), A4/1-A13/13. ISSN 0004-6361. E-ISSN 1432-0746
Institucionální podpora: RVO:67985815
Klíčová slova: sunspots * Sun * infrared
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.014, rok: 2016

We study the topology of the penumbral magnetic field in the lower photosphere, focusing on regions where it returns below the surface.
Observations in visible and near-infrared spectral lines yield a significant difference in the penumbral area covered by magnetic fields of opposite polarity. In the infrared, the number of reversed-polarity Stokes V profiles is smaller by a factor of two than in the visible. For three-lobed Stokes V profiles the numbers differ by up to an order of magnitude.
Trvalý link: http://hdl.handle.net/11104/0268222