Solving the Paradox of the Solar Sodium D<SUB>1</SUB> Line Polarization

Bibcode
2021PhRvL.127h1101A
DOI
10.1103/PhysRevLett.127.081101
Alsina Ballester, Ernest; Belluzzi, Luca; Trujillo Bueno, Javier
Bibliographical reference

Physical Review Letters

Advertised on:
8
2021
Journal
Physical Review Letters
Number of authors
3
IAC number of authors
2
Citations
15
Refereed citations
14
Description
Twenty-five years ago, enigmatic linear polarization signals were discovered in the core of the sodium D1 line. The only explanation that could be found implied that the solar chromosphere is practically unmagnetized, in contradiction with other evidences. This opened a paradox that has challenged physicists for many years. Here we present its solution, demonstrating that these polarization signals can be properly explained in the presence of magnetic fields in the gauss range. This result opens a novel diagnostic window for exploring the elusive magnetism of the solar chromosphere.
Related projects
Project Image
Magnetism, Polarization and Radiative Transfer in Astrophysics

Magnetic fields pervade all astrophysical plasmas and govern most of the variability in the Universe at intermediate time scales. They are present in stars across the whole Hertzsprung-Russell diagram, in galaxies, and even perhaps in the intergalactic medium. Polarized light provides the most reliable source of information at our disposal for the

Tanausú del
Pino Alemán
In progress
Type
Refereed
Solar Physics (FS)

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