Assessing the Effect of Spacecraft Motion on Single-Spacecraft Solar Wind Tracking Techniques

被引：6

作者：

Conlon, T. M. ^{[1
]}

Milan, S. E. ^{[1
]}

Davies, J. A. ^{[2
]}

机构：

[1] Univ Leicester, Dept Phys & Astron, RSPPG, Leicester LE1 3LY, Leics, England

[2] STFC Rutherford Appleton Lab, RAL Space, Didcot OX11 0QX, Oxon, England

来源：

SOLAR PHYSICS | 2014年 / 289卷 / 10期

关键词：

Coronal mass ejections; Corotating interaction regions; Solar wind; CORONAL MASS EJECTIONS; PROPAGATION; HELIOSPHERE;

D O I：

10.1007/s11207-014-0549-z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent advances in wide-angle imaging by the Solar Mass Ejection Imager (SMEI) on board the Coriolis spacecraft and more recently by the Heliospheric Imagers (HI) aboard NASA's Solar TErrestrial RElations Observatory (STEREO), have enabled solar wind transients to be imaged and tracked from the Sun to 1 AU and beyond. In this paper we consider two of the techniques that have been used to determine the propagation characteristics of solar wind transients based on single-spacecraft observations, in particular propagation direction and radial speed. These techniques usually assume that the observing spacecraft remains stationary for the duration of observation of the solar wind transient. We determine the inaccuracy introduced by this assumption for the two STEREO spacecraft and find that it can be significant, and it can lead to an overestimation of the transient velocity as seen from STEREO-A and an underestimation as seen by STEREO-B. This has implications for the prediction or solar wind transients at 1 AU and hence is important for the study of space weather.

引用

页码：3935 / 3947

页数：13

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