A fast Stokes inversion technique based on quadratic regression

	A fast Stokes inversion technique based on quadratic regression
	Teng, Fei; Deng, Yuan-Yong
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2016-05-01
卷号	16 期号:5
关键词	Sun: magnetic fields methods: statistical methods: data analysis techniques: polarimetric
英文摘要	Stokes inversion calculation is a key process in resolving polarization information on radiation from the Sun and obtaining the associated vector magnetic fields. Even in the cases of simple local thermodynamic equilibrium (LTE) and where the Milne-Eddington approximation is valid, the inversion problem may not be easy to solve. The initial values for the iterations are important in handling the case with multiple minima. In this paper, we develop a fast inversion technique without iterations. The time taken for computation is only 1/100 the time that the iterative algorithm takes. In addition, it can provide available initial values even in cases with lower spectral resolutions. This strategy is useful for a filter-type Stokes spectrograph, such as SDO/HMI and the developed two-dimensional real-time spectrograph (2DS).
收录类别	SCI
语种	英语
WOS记录号	WOS:000375793000002
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5368]
专题	国家天文台_太阳物理研究部
作者单位	Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Teng, Fei,Deng, Yuan-Yong. A fast Stokes inversion technique based on quadratic regression[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(5).
APA	Teng, Fei,&Deng, Yuan-Yong.(2016).A fast Stokes inversion technique based on quadratic regression.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(5).
MLA	Teng, Fei,et al."A fast Stokes inversion technique based on quadratic regression".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.5(2016).