Please use this identifier to cite or link to this item:
http://hdl.handle.net/2248/5418
Title: | On the Sensitivity of Partial Redistribution Scattering Polarization Profiles to Various Atmospheric Parameters |
Authors: | Sampoorna, M Trujillo Bueno, J Landi Degl'Innocenti, E |
Keywords: | Line: profiles Polarization Radiative transfer Scattering Sun: atmosphere |
Issue Date: | Oct-2010 |
Publisher: | IOP Publishing |
Citation: | The Astrophysical Journal, Vol. 722, No. 2, pp. 1269–1289 |
Abstract: | This paper presents a detailed study of the scattering polarization profiles formed under partial frequency redistribution (PRD) in two thermal models of the solar atmosphere. Particular attention is given to understanding the influence of several atmospheric parameters on the emergent fractional linear polarization profiles. The shapes of these Q/I profiles are interpreted in terms of the anisotropy of the radiation field, which in turn depends on the source function gradient that sets the angular variation of the specific intensity. We define a suitable frequency integrated anisotropy factor for PRD that can be directly related to the emergent linear polarization. We show that complete frequency redistribution is a good approximation to model weak resonance lines. We also show that the emergent linear polarization profiles can be very sensitive to the thermal structure of the solar atmosphere and, in particular, to spatial variations of the damping parameter. |
Description: | Open Access |
URI: | http://hdl.handle.net/2248/5418 |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
On the Sensitivity of Partial Redistribution | Open Access | 1.32 MB | Adobe PDF | ![]() View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.