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

Sampoorna, M.; Nagendra, K. N.; Sowmya, K.; Stenflo, J. O.; Anusha, L. S.

doi:10.3847/1538-4357/ab3805

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

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

MPS-Authors

Sowmya, K.
Max Planck Institute for Solar System Research, Max Planck Society;

/persons/resource/persons123099

Anusha, L. S.
Max Planck Institute for Solar System Research, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Sampoorna, M., Nagendra, K. N., Sowmya, K., Stenflo, J. O., & Anusha, L. S. (2019). Polarized Line Formation in Arbitrary Strength Magnetic Fields: The Case of a Two-level Atom with Hyperfine Structure Splitting. The Astrophysical Journal, 883(2): 188. doi:10.3847/1538-4357/ab3805.

Cite as: https://hdl.handle.net/21.11116/0000-0006-4795-2

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.