Scattering Polarization and the Hanle Effect in Hα as a Probe of Chromospheric Magnetism: Modeling vs. Observations

Bibcode
2011ASPC..437..117S
Štěpán, J.; Trujilo-Bueno, J.; Ramelli, R.; Bianda, M.
Bibliographical reference

Solar Polarization 6. Proceedings of a conference held in Maui, Hawaii, USA on May 30 to June 4, 2010. Edited by J. R. Kuhn, D. M. Harrington, H. Lin, S. V. Berdyugina, J. Trujillo-Bueno, S. L. Keil, and T. Rimmele. San Francisco: Astronomical Society of the Pacific, 2011., p.117

Advertised on:
4
2011
Number of authors
4
IAC number of authors
0
Citations
1
Refereed citations
1
Description
The Hanle effect in strong spectral lines is the physical mechanism that should be increasingly exploited for quantitative explorations of the magnetism of the quiet solar chromospheric plasma. Here we show, by means of multilevel radiative transfer calculations and new spectropolarimetric observations, that the amplitude and shape of the scattering polarization profiles of the Hα line is very sensitive to the strength and structure of the chromospheric magnetic field. The interpretation of the observations in terms of one-dimensional radiative transfer modeling suggests that there is an abrupt magnetization in the upper chromosphere of the quiet Sun.
Type
Non-refereed

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