Tomography of the solar corona. II. Robust, regularized, positive estimation of the three-dimensional electron density distribution from LASCO-C2 polarized white-light images

被引：71

作者：

Frazin, RA

Janzen, P

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 570卷 / 01期

关键词：

methods : data analysis; Sun : corona;

D O I：

10.1086/339572

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Solar rotational tomography is used to determine the three-dimensional electron density distribution of the solar corona from 2.4 to 6.0 R-.. The robust, regularized, positive estimation method, described in a previous paper, is demonstrated on test cases and on LASCO-C2 data. Because the solar rotational pole is inclined to the plane of the ecliptic by about 7degrees, the tomographic inversion requires a full three-dimensional treatment instead of a series of two-dimensional inversions. The LASCO data are taken from the first Whole Sun Month, which was a period of low solar activity.

引用

页码：408 / 422

页数：15

共 17 条

[1] DETERMINING ELECTRON-DENSITY DISTRIBUTION OF SOLAR CORONA FROM K-CORONAMETER DATA [J].

ALTSCHULER, MD ;

PERRY, RM .

SOLAR PHYSICS, 1972, 23 (02) :410-+

[2]

ALTSCHULERMD, 1979, IMAGE RECONSTRUCTION, P105

[3] Structure of a large low-latitude coronal hole [J].

Bromage, BJJ ;

Alexander, D ;

Breen, A ;

Clegg, JR ;

Del Zanna, G ;

DeForest, C ;

Dobrzycka, D ;

Gopalswamy, N ;

Thompson, B ;

Browning, PK .

SOLAR PHYSICS, 2000, 193 (1-2) :181-193

[4] The large angle spectroscopic coronagraph (LASCO) [J].

Brueckner, GE ;

Howard, RA ;

Koomen, MJ ;

Korendyke, CM ;

Michels, DJ ;

Moses, JD ;

Socker, DG ;

Dere, KP ;

Lamy, PL ;

Llebaria, A ;

Bout, MV ;

Schwenn, R ;

Simnett, GM ;

Bedford, DK ;

Eyles, CJ .

SOLAR PHYSICS, 1995, 162 (1-2) :357-402

[5] An empirical model of a polar coronal hole at solar minimum [J].

Cranmer, SR ;

Kohl, JL ;

Noci, G ;

Antonucci, E ;

Tondello, G ;

Huber, MCE ;

Strachan, L ;

Panasyuk, AV ;

Gardner, LD ;

Romoli, M ;

Fineschi, S ;

Dobrzycka, D ;

Raymond, JC ;

Nicolosi, P ;

Siegmund, OHW ;

Spadaro, D ;

Benna, C ;

Ciaravella, A ;

Giordano, S ;

Habbal, SR ;

Karovska, M ;

Li, X ;

Martin, R ;

Michels, JG ;

Modigliani, A ;

Naletto, G ;

O'Neal, RH ;

Pernechele, C ;

Poletto, G ;

Smith, PL ;

Suleiman, RM .

ASTROPHYSICAL JOURNAL, 1999, 511 (01) :481-501

[6]

Dobrzycka D, 1999, AIP CONF PROC, V471, P305, DOI 10.1063/1.58805

[7] Grouped coordinate descent algorithms for robust edge-preserving image restoration [J].

Fessler, JA .

IMAGE RECONSTRUCTION AND RESTORATION II, 1997, 3170 :184-194

[8] Tomography of the solar corona. I. A robust, regularized, positive estimation method [J].

Frazin, RA .

ASTROPHYSICAL JOURNAL, 2000, 530 (02) :1026-1035

[9] Solar minimum streamer densities and temperatures using Whole Sun Month coordinated data sets [J].

Gibson, SE ;

Fludra, A ;

Bagenal, F ;

Biesecker, D ;

Del Zanna, G ;

Bromage, B .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1999, 104 (A5) :9691-9699

[10]

Golub G.H., 2013, MATRIX COMPUTATIONS

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