NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Stream interfaces and energetic ions closer than expected: Analyses of Pioneers 10 and 11 observationsAn empirical study of corotating interaction regions (CIRs) observed between 3.9 AU and 5.9 AU on Pioneers 10 and 11 shows that the main corotation energetic ion population (CEIP), which is associated with the trailing reverse shock, terminates within the CIR at a definite, structural boundary, which we show here is the stream interface. This new result has significant implications for solar wind and energetic particle modeling. In particular it implies either that the reverse shock forms closer to the stream interface than models suggest or that the theories that treat the generation and transport of these energetic ions, such as preshock Fermi acceleration and cross-field diffusion must be combined or extended. We test these scenarios by comparing the CEIP intensity profiles on the two sides of the stream interface. We find that while each automatically accounts for one or two aspects of the results none of them alone can account for all of our empirical results.
Document ID
19950046494
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Intriligator, Devrie S.
(Carmel Research Center Santa Monica, CA, United States)
Siscoe, George L.
(Carmel Research Center Santa Monica, CA, United States)
Date Acquired
August 16, 2013
Publication Date
June 15, 1994
Publication Information
Publication: Geophysical Research Letters
Volume: 21
Issue: 12
ISSN: 0094-8276
Subject Category
Solar Physics
Accession Number
95A78093
Funding Number(s)
CONTRACT_GRANT: NAS2-13692
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available