Global maps of the magnetic field in the solar corona

Yang, Zihao, Bethge, Christian, Tian, Hui, Tomczyk, Steve, Morton, Richard, Zanna, Giulio Del, McIntosh, Scott W., Gibson, Sarah, Samanta, Tanomy, He, Jiansen, Chen, Yajie and Wang, Linghua (2020) Global maps of the magnetic field in the solar corona. Science, 369 (6504). pp. 694-697. ISSN 0036-8075

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Official URL: https://doi.org/10.1126/science.abb4462

Abstract

Understanding many physical processes in the solar atmosphere requires determination of the magnetic field in each atmospheric layer. However, direct measurements of the magnetic field in the Sun’s corona are difficult to obtain. Using observations with the Coronal Multi-channel Polarimeter, we have determined the spatial distribution of the plasma density in the corona, and the phase speed of the prevailing transverse magnetohydrodynamic waves within the plasma. We combine these measurements to map the plane-of-sky component of the global coronal magnetic field. The derived field strengths in the corona from 1.05 to 1.35 solar radii are mostly 1-4 Gauss. These results demonstrate the capability of imaging spectroscopy in coronal magnetic field diagnostics.

Item Type: Article
Subjects: F300 Physics
F500 Astronomy
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 12 Jun 2020 08:42
Last Modified: 14 Sep 2020 12:00
URI: http://nrl.northumbria.ac.uk/id/eprint/43430

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