A quantitative method to optimise magnetic field line fitting of observed coronal loops

被引：39

作者：

Carcedo, L ^{[1
]}

Brown, DS

Hood, AW

Neukirch, T

Wiegelmann, T

机构：

[1] Univ St Andrews, Sch Math & Stat, St Andrews KY16 9SS, Fife, Scotland

[2] Max Planck Inst Aeron, D-37191 Katlenburg Lindau, Germany

来源：

SOLAR PHYSICS | 2003年 / 218卷 / 1-2期

关键词：

D O I：

10.1023/B:SOLA.0000013045.65499.da

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Many authors use magnetic-field models to extrapolate the field in the solar corona from magnetic data in the photosphere. The accuracy of such extrapolations is usually judged qualitatively by eye, where a less judgemental quantitative approach would be more desirable. In this paper, a robust method for obtaining the best fit between a theoretical magnetic field and intensity observations of coronal loops on the solar disk will be presented. The method will be applied to Yohkoh data using a linear force-free field as an illustration. Any other theoretical model for the magnetic field can be used, provided there is enough freedom in the model to optimize the fit.

引用

页码：29 / 40

页数：12

共 37 条

[1]

ALISSANDRAKIS CE, 1981, ASTRON ASTROPHYS, V100, P197

[2]

Amari T, 1999, ASTRON ASTROPHYS, V350, P1051

[3] Reconstructing the solar coronal magnetic field as a force-free magnetic field [J].

Amari, T ;

Aly, JJ ;

Luciani, JF ;

Boulmezaoud, TZ ;

Mikic, Z .

SOLAR PHYSICS, 1997, 174 (1-2) :129-149

[4]

ARNAUD J, 1987, ASTRON ASTROPHYS, V178, P263

[5] Three-dimensional stereoscopic analysis of solar active region loops.: I.: SOHO EIT observations at temperatures of (1.0-1.5) x 106 K [J].

Aschwanden, MJ ;

Newmark, JS ;

Delaboudinière, JP ;

Neupert, WM ;

Klimchuk, JA ;

Gary, GA ;

Portier-Fozzani, F ;

Zucker, A .

ASTROPHYSICAL JOURNAL, 1999, 515 (02) :842-867

[6] EXACT GREENS FUNCTION METHOD OF SOLAR FORCE-FREE MAGNETIC-FIELD COMPUTATIONS WITH CONSTANT ALPHA .1. THEORY AND BASIC TEST CASES [J].

CHIU, YT ;

HILTON, HH .

ASTROPHYSICAL JOURNAL, 1977, 212 (03) :873-885

[7]

De Moortel I, 2000, ASTRON ASTROPHYS, V363, P269

[8]

FRAZIER EN, 1972, SOL PHYS, V24, P98, DOI 10.1007/BF00231086

[9] Plasma beta above a solar active region: Rethinking the paradigm [J].

Gary, GA .

SOLAR PHYSICS, 2001, 203 (01) :71-86

[10] LINEAR FORCE-FREE MAGNETIC-FIELDS FOR SOLAR EXTRAPOLATION AND INTERPRETATION [J].

GARY, GA .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 69 (02) :323-348

← 1 2 3 4 →