Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/6818
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dc.contributor.authorSampoorna, M-
dc.contributor.authorNagendra, K. N-
dc.contributor.authorStenflo, J. O-
dc.date.accessioned2020-11-11T01:08:08Z-
dc.date.available2020-11-11T01:08:08Z-
dc.date.issued2017-08-
dc.identifier.citationThe Astrophysical Journal, Vol. 844, No. 2, 97en_US
dc.identifier.issn0004-637X-
dc.identifier.urihttp://prints.iiap.res.in/handle/2248/6818-
dc.descriptionRestricted Access © The American Astronomical Society https://doi.org/10.3847/1538-4357/aa7a15en_US
dc.description.abstractMagnetic fields in the solar atmosphere leave their fingerprints in the polarized spectrum of the Sun via the Hanle and Zeeman effects. While the Hanle and Zeeman effects dominate, respectively, in the weak and strong field regimes, both these effects jointly operate in the intermediate field strength regime. Therefore, it is necessary to solve the polarized line transfer equation, including the combined influence of Hanle and Zeeman effects. Furthermore, it is required to take into account the effects of partial frequency redistribution (PRD) in scattering when dealing with strong chromospheric lines with broad damping wings. In this paper, we present a numerical method to solve the problem of polarized PRD line formation in magnetic fields of arbitrary strength and orientation. This numerical method is based on the concept of operator perturbation. For our studies, we consider a two-level atom model without hyperfine structure and lower-level polarization. We compare the PRD idealization of angle-averaged Hanle–Zeeman redistribution matrices with the full treatment of angle-dependent PRD, to indicate when the idealized treatment is inadequate and what kind of polarization effects are specific to angledependent PRD. Because the angle-dependent treatment is presently computationally prohibitive when applied to realistic model atmospheres, we present the computed emergent Stokes profiles for a range of magnetic fields, with the assumption of an isothermal one-dimensional medium.en_US
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.subjectLine: profilesen_US
dc.subjectPolarizationen_US
dc.subjectRadiative transferen_US
dc.subjectScatteringen_US
dc.subjectSun: atmosphereen_US
dc.titlePolarized Line Formation in Arbitrary Strength Magnetic Fields Angle-averaged and Angle-dependent Partial Frequency Redistributionen_US
dc.typeArticleen_US
Appears in Collections:IIAP Publications



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