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Ca II 854.2 nm spectropolarimetry compared with ALMA and with scattering polarization theory

Published online by Cambridge University Press:  24 September 2020

J. W. Harvey Open the ORCID record for J. W. Harvey [Opens in a new window]  and
SOLIS Team
J. W. Harvey
Affiliation:
National Science Foundation’s National Solar Observatory, 3665 Discovery Drive, Boulder, CO80303, USA email: [email protected]
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Abstract

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Ca II 854.2 nm spectropolarimetric observations of the Sun are compared with nearly simultaneous ALMA observations. These two types of chromospheric observations show rough agreement but also several notable differences. High-sensitivity (≃ 0.01%) observations reveal ubiquitous linear polarization structures across the solar disk in the core of the 854.2 nm line that are consistent with previous theoretical studies.

Keywords

Sun: chromosphereSun: magnetic fieldsSun: radio radiationpolarizationradiative transferscattering
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S354: Solar and Stellar Magnetic Fields: Origins and Manifestations , June 2019 , pp. 42 - 45
Copyright
© International Astronomical Union 2020

References

Gosain, S. 2017, SOLARNET IV. The Physics of the Sun from the Interior to the Outer Atmosphere, Online at https://ui.adsabs.harvard.edu/link_gateway/2017psio.confE.50G/PUB_PDFGoogle Scholar
Harvey, J. W., Bertello, L., Branston, D., Britanik, J., Bulau, S., Cole, L., Gosain, S., Harker, B., Jones, H. P., Marble, A., Martinez Pillet, V., Pevtsov, A., Schramm, K., Streander, K., & Villegas, H. 2016, AAS/Solar Physics Division Abstracts #47, Online at https://ui.adsabs.harvard.edu/abs/2016SPD....4710106H/abstractGoogle Scholar
Jurčák, J., Štěpán, J., Trujillo Bueno, J., & Bianda, M. 2018, A&A, 619, A60Google Scholar
Keller, C. U., Harvey, J. W., & Solis, Team 2003, Astron. Soc. Pac. Conf. Series, 307, 13Google Scholar
Molnar, M. E., Reardon, K. P., Chai, Y., Gary, D., Uitenbroek, H., Cauzzi, G., & Cranmer, S. R. 2019, ApJ, 881, 91CrossRefGoogle Scholar
Štěpán, Jiř, & Trujillo Bueno, Javier 2016, ApJ, 826, L10CrossRefGoogle Scholar
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Harvey et al. supplementary material

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