Observations of Rapid Velocity Variations in the Slow Solar Wind

被引：0
作者：
S. A. Hardwick
M. M. Bisi
J. A. Davies
A. R. Breen
R. A. Fallows
R. A. Harrison
C. J. Davis
机构：
[1] Aberystwyth University,Institute of Mathematics and Physics
[2] Penglais Campus,RAL Space, Rutherford Appleton Laboratory
[3] Harwell Oxford,ASTRON
[4] The Netherlands Institute for Radio Astronomy,Department of Meteorology
[5] University of Reading,undefined
来源：
Solar Physics | 2013年 / 285卷
关键词：
Solar Wind; Radio Source; Slow Solar Wind; Scintillation Index; Stereo Spacecraft;
D O I：
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中图分类号：
学科分类号：
摘要：
The technique of interplanetary scintillation (IPS) is the observation of rapid fluctuations of the radio signal from an astronomical compact source as the signal passes through the ever-changing density of the solar wind. Cross-correlation of simultaneous observations of IPS from a single radio source, received at multiple sites of the European Incoherent SCATter (EISCAT) radio antenna network, is used to determine the velocity of the solar wind material passing over the lines of sight of the antennas. Calculated velocities reveal the slow solar wind to contain rapid velocity variations when viewed on a time-scale of several minutes. Solar TErrestrial RElations Observatory (STEREO) Heliospheric Imager (HI) observations of white-light intensity have been compared with EISCAT observations of IPS to identify common density structures that may relate to the rapid velocity variations in the slow solar wind.
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页码：111 / 126
页数：15
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