The solar eruption of 2005 May 13 and its effects: Long-baseline interplanetary scintillation observations of the earth-directed coronal mass ejection

Breen, A. R. and Fallows, R. A. and Bisi, M. M. and Jones, R. A. and Jackson, B. V. and Kojima, M. and Dorrian, G. D. and Middleton, H. R. and Thomasson, P. and Wannberg, G. (2008) The solar eruption of 2005 May 13 and its effects: Long-baseline interplanetary scintillation observations of the earth-directed coronal mass ejection. Astrophysical Journal Letters, 683 (1). L79-L82. ISSN 2041-8213

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Abstract

Long-baseline observations of interplanetary scintillation (IPS) provide a unique source of information on solar wind speed and meridional direction across the inner regions of the solar system. We report the results of a series of coordinated IPS observations of an Earth-directed CME. A significant development in the interpretation of these data is the use of 3D tomographic reconstructions of solar wind structure derived from STELab IPS data to better constrain the analysis of extremely long baseline observations from EISCAT and MERLIN. The combination of these two approaches leads to a significantly better understanding of the interaction of the CME with the background solar wind than would be possible with either technique alone, revealing a significant rotation in the meridional flow direction of the background wind associated with the passage of the CME. The CME itself is decelerated significantly between its emergence through the corona and its arrival in the IPS ray path, with comparatively little change in speed from then until arrival at ACE.

Item Type:
Journal Article
Journal or Publication Title:
Astrophysical Journal Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3103
Subjects:
ID Code:
63300
Deposited By:
Deposited On:
09 Apr 2013 10:35
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:22