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Low-energy solar electrons and ions observed at Ulysses February-April, 1991 - The inner heliosphere as a particle reservoirUlysses observations at 2.5 AU of 38-315 keV electrons and 61-4752 keV ions during February-April 1991 suggest in several ways that, during periods of sustained high solar activity, the inner heliosphere serves as a 'reservoir' for low-energy solar particles. Particle increases were not associated one-to-one with large X-ray flares because of their poor magnetic connection, yet intensities in March-April remained well above their February levels. The rise phase of the particle event associated with the great flare of 2245UT March 22 lasted most of two days, while throughout the one-week decay phase, the lowest-energy ion fluxes were nearly equal at Ulysses and earth (IMP-8).
Document ID
19920064813
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Roelof, E. C.
(NASA Headquarters Washington, DC United States)
Gold, R. E.
(Johns Hopkins University Laurel, MD, United States)
Simnett, G. M.
(NASA Headquarters Washington, DC United States)
Tappin, S. J.
(Birmingham, University United Kingdom)
Armstrong, T. P.
(Kansas, University Lawrence, United States)
Lanzerotti, L. J.
(AT&T Bell Laboratories Murray Hill, NJ, United States)
Date Acquired
August 15, 2013
Publication Date
June 19, 1992
Publication Information
Publication: Geophysical Research Letters
Volume: 19
Issue: 12 J
ISSN: 0094-8276
Subject Category
Solar Physics
Accession Number
92A47437
Funding Number(s)
CONTRACT_GRANT: N00039-91-C-0001
Distribution Limits
Public
Copyright
Other

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