Global maps of the magnetic field in the solar corona

doi:10.1126/science.abb4462

GSTDTAP > 气候变化

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
	2020-08-07
发表期刊	Science
出版年	2020
英文摘要	The solar corona is the outermost layer of the Sun's atmosphere, consisting of hot, diffuse, and highly ionized plasma. The magnetic field in this region is expected to drive many of its physical properties but has been difficult to measure with observations. Yang et al. used near-infrared imaging spectroscopy to determine the electron density and magnetohydrodynamic wave speed in the corona. By combining these measurements, they derived maps of the magnetic field throughout the entire observable corona. The method could potentially be used to produce routine magnetic field maps for the corona that are similar to those already available for the Sun's surface. Science , this issue p. [694][1] 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. [1]: /lookup/doi/10.1126/science.abb4462
领域	气候变化 ; 资源环境
URL	查看原文
引用统计	被引频次：86[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/288015
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Zihao Yang,Christian Bethge,Hui Tian,et al. Global maps of the magnetic field in the solar corona[J]. Science,2020.
APA	Zihao Yang.,Christian Bethge.,Hui Tian.,Steven Tomczyk.,Richard Morton.,...&Linghua Wang.(2020).Global maps of the magnetic field in the solar corona.Science.
MLA	Zihao Yang,et al."Global maps of the magnetic field in the solar corona".Science (2020).