Cross-Calibration of SMART-1 XSM with GOES and RHESSI

被引：5

作者：

Vaananen, Mikko ^{[1
]}

Alha, Lauri ^{[1
]}

Huovelin, Juhani ^{[1
]}

机构：

[1] Univ Helsinki, FIN-00014 Helsinki, Finland

来源：

SOLAR PHYSICS | 2009年 / 260卷 / 02期

基金：

芬兰科学院;

关键词：

Flares; Solar corona; Sun; SMART-1; XSM; X-rays; Cross-calibration; RHESSI; GOES; SOLAR MONITOR XSM; EMISSION MEASURES; ATOMIC DATABASE; MISSION; TEMPERATURES; PERFORMANCE; EXPRESSIONS; CHIANTI; LINES;

D O I：

10.1007/s11207-009-9461-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A number of X-ray instruments have been active in observing the solar coronal X-ray radiation this decade. We have compared XSM observations with simultaneous GOES and RHESSI observations. We present flux calibrations for all instruments and compare XSM and GOES total emission measures (TEM) and temperatures (T). The model-independent flux comparison with XSM and GOES data in the 1 -aEuro parts per thousand 8 band shows that the fluxes agree with a ratio of 0.94 +/- 0.09 for the data up to April 2005. The Mewe model-dependent Ts and TEMs differ as XSM observes 1.47 +/- 0.03 times higher Ts than GOES and 1.23 +/- 0.08 times higher TEMs and 0.92 +/- 0.05 times lower fluxes. The comparison with RHESSI data in the 6 -aEuro parts per thousand 8 keV band shows that the average XSM/RHESSI flux ratio is 2.63 +/- 0.23. The discrepancies revealed in this study are similar to discrepancies observed in a number of other spaceborne cross-calibration studies.

引用

页码：479 / 488

页数：10

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