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

J. W. Harvey, Alexander Kosovichev, Klaus Strassmeier, Moira Jardine

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish (US)
Pages (from-to)42-45
Number of pages4
JournalProceedings of the International Astronomical Union
DOIs
StateAccepted/In press - 2020

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

Keywords

  • polarization
  • radiative transfer
  • scattering
  • Sun: Chromosphere
  • Sun: Magnetic fields
  • Sun: Radio radiation

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