Chromospheric Polarization in the Photospheric Solar Oxygen Infrared Triplet

Bibcode
2015ApJ...808L..13D
DOI
10.1088/2041-8205/808/1/L13
Del Pino Alemán, T.; Trujillo Bueno, J.
Referencia bibliográfica

The Astrophysical Journal Letters, Volume 808, Issue 1, article id. L13, 6 pp. (2015).

Fecha de publicación:
7
2015
Número de autores
2
Número de autores del IAC
2
Número de citas
5
Número de citas referidas
4
Descripción
We present multilevel radiative transfer modeling of the scattering polarization observed in the solar O i infrared triplet around 777 nm. We demonstrate that the scattering polarization pattern observed on the solar disk forms in the chromosphere, far above the photospheric region where the bulk of the emergent intensity profiles originate. We investigate the sensitivity of the polarization pattern to the thermal structure of the solar atmosphere and to the presence of weak magnetic fields (10‑2–100 G) through the Hanle effect, showing that the scattering polarization signals of the oxygen infrared triplet encode information on the magnetism of the solar chromosphere.
Proyectos relacionados
Project Image
Magnetismo, Polarización y Transferencia Radiativa en Astrofísica

Los campos magnéticos están presentes en todos los plasmas astrofísicos y controlan la mayor parte de la variabilidad que se observa en el Universo a escalas temporales intermedias. Se encuentran en estrellas, a lo largo de todo el diagrama de Hertzsprung-Russell, en galaxias, e incluso quizás en el medio intergaláctico. La polarización de la luz

Tanausú del
Pino Alemán
En ejecución
Tipo
Con árbitro
Transferencia radiativa
Física Solar (FS)

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