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Polarized Line Formation in Arbitrary Strength Magnetic Fields: The Case of a Two-level Atom with Hyperfine Structure Splitting

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dc.contributor.author Sampoorna, M
dc.contributor.author Nagendra, K. N
dc.contributor.author Sowmya, K
dc.contributor.author Stenflo, J. O
dc.contributor.author Anusha, L. S
dc.date.accessioned 2020-11-26T15:47:15Z
dc.date.available 2020-11-26T15:47:15Z
dc.date.issued 2019-10-01
dc.identifier.citation The Astrophysical Journal, Vol. 833, No. 2, 188 en_US
dc.identifier.issn 0004-637X
dc.identifier.uri http://prints.iiap.res.in/handle/2248/7430
dc.description Restricted Access © The American Astronomical Society https://doi.org/10.3847/1538-4357/ab3805 en_US
dc.description.abstract Quantum interference effects, together with partial frequency redistribution (PFR) in line scattering, produce subtle signatures in the so-called Second Solar Spectrum (the linearly polarized spectrum of the Sun). These signatures are modified in the presence of arbitrary strength magnetic fields via the Hanle, Zeeman, and Paschen–Back effects. In the present paper we solve the problem of polarized line formation in a magnetized atmosphere taking into account scattering in a two-level atom with hyperfine structure splitting together with PFR. To this end we incorporate the collisionless PFR matrix derived in Sowmya et al. in the polarized transfer equation. We apply the scattering expansion method to solve this transfer equation. We study the combined effects of PFR and the Paschen–Back effect on polarized line profiles formed in an isothermal one-dimensional planar atmosphere. For this purpose, we consider the cases of D2 lines of Li i and Na i. en_US
dc.language.iso en en_US
dc.publisher IOP Publishing en_US
dc.subject line: formation en_US
dc.subject polarization en_US
dc.subject radiative transfer en_US
dc.subject scattering en_US
dc.subject Sun: magnetic fields en_US
dc.title Polarized Line Formation in Arbitrary Strength Magnetic Fields: The Case of a Two-level Atom with Hyperfine Structure Splitting en_US
dc.type Article en_US


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