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Anisotropies observed within ejecta during solar particle onsetsThe observation of solar energetic particle onsets within ejecta material suggests that the magnetic field topology of these ejecta is more likely to be that of a 'magnetic bottle' rooted at the Sun than that of a detached plasmoid-like structure. Another possibility is that only open field lines are present. We examine the anisotropies of particle onsets which onset inside ejecta material. A striking feature of a significant fraction of these events is that they show, at onset, strong flows from the east of the Sun, in contrast to the flows from the west usually observed at the onset of solar particle events outside of ejecta. This observation confirms that magnetic field lines can be strongly distorted inside ejecta so as to lie nearly opposite to the Parker spiral direction. This conclusion is fully consistent with the presence of looped magnetic structures in ejecta. If only open field lines are present, it is unclear how these large field line distortions could have been produced.
Document ID
19960021317
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Richardson, I. G.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Cane, H. V.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 17, 2013
Publication Date
June 30, 1995
Publication Information
Publication: International Solar Wind 8 Conference
Subject Category
Solar Physics
Accession Number
96N24713
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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