Spectropolarimetry of solar faculae - High spatial resolution results

Bibcode
1990A&A...227..591D
del Toro Iniesta, J. C.; Collados, M.; Sanchez Almeida, J.; Semel, M.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 227, no. 2, Jan. 1990, p. 591-599. Research supported by the Accion Integrada Hispano-Francesa and CAICYT.

Advertised on:
1
1990
Number of authors
4
IAC number of authors
3
Citations
13
Refereed citations
13
Description
A new method to measure the magnetic field strength of small-scale solar magnetic concentrations is presented. It is based on the center of gravity method (Semel, 1967), is independent of radiative transfer calculations and only observable parameters are needed. This method also provides parameters like filling factor (area fraction occupied by the tubes), continuum intensity contrast between flux tubes and their surroundings, in a two-component model scheme. The method is applied to spectropolarimetric high spatial resolution data. Local variations of the above parameters inside single faculae are found. This result suggests some indications about flux tube evolution. A comparison with low spatial resolution results is also made.
Type
Refereed
Magnetic fields
Polarimetry
Radiative transfer

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