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Preliminary results on the apparent size of the sources of type III bursts observed at low frequenciesWe present preliminary results on the apparent angular size of the sources of four type III bursts observed between 3500 and 50 kHz from the IMP-6 spacecraft. The observations were made with a dipole rotating in the plane of the ecliptic where the sources are assumed to be. The apparent angular sizes obtained are unexpectedly large. We discuss different explanations for the results. It seems that the scattering of radio waves by electron density inhomogeneities is the most likely cause. We report a temporal increase of the apparent angular size of the source during the burst lifetime for some bursts. From its characteristics it appears to be a real effect.
Document ID
19770027736
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Alvarez, H.
(Radio Astronomy Observatory, Ann Arbor, Mich.; Centro de Investigacion de Astronomia Merida, Venezuela)
Date Acquired
August 8, 2013
Publication Date
February 1, 1976
Publication Information
Publication: Solar Physics
Volume: 46
Subject Category
Solar Physics
Accession Number
77A10588
Funding Number(s)
CONTRACT_GRANT: NSG-7004
Distribution Limits
Public
Copyright
Other

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