Computer Science
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..358..237f&link_type=abstract
Solar Polarization 4, ASP Conference Series, Vol. 358, Proceedings of the conference held 19-23 September, 2005, in Boulder, Col
Computer Science
Scientific paper
We present the current status of modeling scattering polarization in strong lines and compare it to observations. First, we discuss how the emergent polarization profile depends directly on the source function gradient and the anisotropy of the radiation field. This explains naturally the formation of the triplet peak structure often observed in these strong lines. Then, we investigate the Ca II K line which is of particular interest since it forms high in the chromosphere. The degree of its scattering polarization depends sensitively on atmospheric properties and even provides observational evidence for the presence of cool components in the chromosphere. Therefore, polarized scattering in Ca II K might provide a long searched for, second observational tool (apart from CO molecules) to access the coolest parts of the chromosphere.
Fluri D. M.
Holzreuter R.
Stenflo Jan Olof
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