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Speckle spectro‐polarimetry of magnetic structures
Author(s) -
Janssen K.,
Kneer F.
Publication year - 2003
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200310114
Subject(s) - polarimetry , physics , optics , speckle pattern , wavelength , doppler effect , magnetic field , telescope , stokes parameters , astronomy , scattering , quantum mechanics
Two‐dimensional spectrograms were obtained with the Vacuum Tower Telescope, Tenerife, in order to study small‐scale structures and faculae on the Sun. Using the speckle reconstruction method, we obtain high‐resolution images and wavelength scans. Magnetic fields can be studied from Stokes V profiles, and velocity maps are gained by the Doppler shift of the center of gravity of Stokes I . Here some results about small‐scale structures and their magnetic fields are shown.