Global maps of the magnetic field in the solar corona

Zihao Yang; Christian Bethge; Hui Tian; Steven Tomczyk; Richard Morton; Giulio Del Zanna; Scott W. McIntosh; Bidya Binay Karak; Sarah Gibson; Tanmoy Samanta; Jiansen He; Yajie Chen; Linghua Wang

doi:10.1126/science.abb4462

Global maps of the magnetic field in the solar corona

Zihao Yang, Christian Bethge, Hui Tian, Steven Tomczyk, Richard Morton, Giulio Del Zanna, Scott W. McIntosh, Bidya Binay Karak, Sarah Gibson, Tanmoy Samanta, Jiansen He, Yajie Chen, Linghua Wang

HAO Administrative Office

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

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 combined 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 to 4 gauss. Our results demonstrate the capability of imaging spectroscopy in coronal magnetic field diagnostics.

Original language	English
Pages (from-to)	694-697
Number of pages	4
Journal	Science
Volume	369
Issue number	6504
DOIs	https://doi.org/10.1126/science.abb4462
State	Published - Aug 7 2020

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title = "Global maps of the magnetic field in the solar corona",

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 combined 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 to 4 gauss. Our results demonstrate the capability of imaging spectroscopy in coronal magnetic field diagnostics.",

author = "Zihao Yang and Christian Bethge and Hui Tian and Steven Tomczyk and Richard Morton and \{Del Zanna\}, Giulio and McIntosh, \{Scott W.\} and Karak, \{Bidya Binay\} and Sarah Gibson and Tanmoy Samanta and Jiansen He and Yajie Chen and Linghua Wang",

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doi = "10.1126/science.abb4462",

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TY - JOUR

T1 - Global maps of the magnetic field in the solar corona

AU - Yang, Zihao

AU - Bethge, Christian

AU - Tian, Hui

AU - Tomczyk, Steven

AU - Morton, Richard

AU - Del Zanna, Giulio

AU - McIntosh, Scott W.

AU - Karak, Bidya Binay

AU - Gibson, Sarah

AU - Samanta, Tanmoy

AU - He, Jiansen

AU - Chen, Yajie

AU - Wang, Linghua

PY - 2020/8/7

Y1 - 2020/8/7

N2 - 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 combined 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 to 4 gauss. Our results demonstrate the capability of imaging spectroscopy in coronal magnetic field diagnostics.

AB - 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 combined 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 to 4 gauss. Our results demonstrate the capability of imaging spectroscopy in coronal magnetic field diagnostics.

UR - https://www.scopus.com/pages/publications/85089301272

U2 - 10.1126/science.abb4462

DO - 10.1126/science.abb4462

M3 - Article

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AN - SCOPUS:85089301272

SN - 0036-8075

VL - 369

SP - 694

EP - 697

JO - Science

JF - Science

IS - 6504

ER -

Global maps of the magnetic field in the solar corona

Abstract

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