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  The Magnetic Sensitivity of the Resonance and Subordinate Lines of Mg II in the Solar Chromosphere

del Pino Alemán, T., Trujillo Bueno, J., Casini, R., & Manso Sainz, R. (2020). The Magnetic Sensitivity of the Resonance and Subordinate Lines of Mg II in the Solar Chromosphere. The Astrophysical Journal, 891(1): 91. doi:10.3847/1538-4357/ab6bc9.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-A001-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-A041-B
Genre: Journal Article

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del Pino Alemán, T. , Author
Trujillo Bueno, J., Author
Casini, R., Author
Manso Sainz, R.1, Author              
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 Abstract: We carry out a theoretical study of the polarization of the solar Mg ii h–k doublet (including its extended wings) and the subordinate ultraviolet (UV) triplet around 280 nm. These lines are of great diagnostic interest, as they encode information on the physical properties of the solar atmosphere from the upper photosphere to the chromosphere–corona transition region. We base our study on radiative transfer calculations of spectral line polarization in one-dimensional models of quiet and plage regions of the solar atmosphere. Our calculations take into account the combined action of atomic polarization, quantum level interference, frequency redistribution, and magnetic fields of arbitrary strength. In particular, we study the sensitivity of the emergent Stokes profiles to changes in the magnetic field through the Zeeman and Hanle effects. We also study the impact of the chromospheric plasma dynamics on the emergent Stokes profiles, taking into account the angle-dependent frequency redistribution in the h–k resonance transitions. The results presented here are of interest for the interpretation of spectropolarimetric observations in this important region of the solar UV spectrum.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.3847/1538-4357/ab6bc9
 Degree: -

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Title: The Astrophysical Journal
Source Genre: Journal
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Publ. Info: Bristol; Vienna : IOP Publishing; IAEA
Pages: - Volume / Issue: 891 (1) Sequence Number: 91 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3