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Interplanetary radio storms. II - Emission levels and solar wind speed in the range 0.05-0.8 AUStorms of interplanetary type III radio bursts (IP storms) are commonly observed in the interplanetary medium by the ISEE-3 radio instrument. This instrument has the capability of accurately determining the arrival direction of the radio emission. At each observing frequency, the storm radio sources are tracked as they cross the line-of-sight to the sun. Using a simple model, the emission levels are determined at a number of radio frequencies for four separate storms. The IP storm radiation is found to occur in regions of enhanced density at levels of 0.05 to 0.8 AU. The density in these enhancements falls off faster than R(-2). The solar wind speed in the storm region is also measured. The analysis is consistent with steady conditions in the storm region during a few days around the III storm burst radio emission at the harmonic of the local plasma frequency.
Document ID
19850036779
Document Type
Reprint (Version printed in journal)
Authors
Bougeret, J.-L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fainberg, J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stone, R. G.
(NASA Goddard Space Flight Center Laboratory for Extraterrestrial Physics, Greenbelt, MD; Paris, Observatoire, Paris; Meudon, Observat, France)
Date Acquired
August 12, 2013
Publication Date
December 1, 1984
Publication Information
Publication: Astronomy and Astrophysics
Volume: 141
Issue: 1, De
ISSN: 0004-6361
Subject Category
Solar Physics
Distribution Limits
Public
Copyright
Other
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