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Vacuum ultraviolet detection of the VLISM-heliosphere interactionAs the neutral components of the interstellar gas flow through the heliosphere their spatial distribution is modified by charge exchange with the solar plasma, photoionization, and radiation pressure. The deep space probes Pioneers 10/11 and Voyagers 1/2 have provided an opportunity to investigate this distribution through VUV observations of the heliospheric glow. Since the interactions of the inflowing neutrals with the heliosphere depend on both space and time it is particularly useful to have multiple spacecraft observations. Pioneer 10 is in the downstream region of the inflowing interstellar breeze at 50 AU while Pioneer 11 and Voyager 2 are upstream at about 30 AU. Voyager 1 is also upstream at about 40 AU but at a heliographic latitude of + 30 deg. Both temporal and spatial effects are expected to be quite different for the upstream and downstream regions. Some of the recent VUV data and its implications with respect to the heliospheric structure will be presented.
Document ID
19920069364
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Judge, D. L.
(NASA Ames Research Center Moffett Field, CA, United States)
Gangopadhyay, P.
(NASA Ames Research Center Moffett Field, CA, United States)
Ogawa, H. S.
(Southern California, University Los Angeles, CA, United States)
Blum, P.
(Bonn, Universitaet Germany)
Date Acquired
August 15, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Advances in Space Research
Volume: 12
Issue: 8 Au
ISSN: 0273-1177
Subject Category
Astrophysics
Accession Number
92A51988
Funding Number(s)
CONTRACT_GRANT: NAG2-146
Distribution Limits
Public
Copyright
Other

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