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Type III radio bursts in the interplanetary medium - The role of propagationInterplanetary type III radio burst observations are analyzed in order to ascertain the role played by propagation effects between the true source and the observer. Large source altitudes are noted, together with an increasing angular size of sources with increasing angular distance from the sun's center. These and other observations furnish strong evidence for the theory that propagation effects, group delays, ducting and/or scattering significantly affect the observed heights, sizes, and brightness temperatures of interplanetary type III bursts. This would be true irrespective of whether the bursts are due to plasma radiation at the fundamental or at the harmonic, and the effects would extend to the arrival times of the radiation to a greater or lesser extent, depending on the path from the source to the observer.
Document ID
19850033061
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Steinberg, J. L.
(Colorado Univ. Boulder, CO, United States)
Hoang, S.
(Colorado Univ. Boulder, CO, United States)
Lecacheux, A.
(Colorado Univ. Boulder, CO, United States)
Aubier, M. G.
(Meudon, Observatoire, Meudon Hauts-de-Seine, France)
Dulk, G. A.
(Meudon, Observatoire, Meudon, Hauts-de-Seine, France; Colorado, University Boulder, CO, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1984
Publication Information
Publication: Astronomy and Astrophysics
Volume: 140
Issue: 1
ISSN: 0004-6361
Subject Category
Solar Physics
Accession Number
85A15212
Funding Number(s)
CONTRACT_GRANT: NSG-7287
CONTRACT_GRANT: NAGW-91
Distribution Limits
Public
Copyright
Other

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