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Solar flare produced pulsations in meter and X-ray wavelengthsThe mechanism responsible for the modulation of synchrotron radiation in the meter wave range by a solar flare is examined. The proposed explanation is based on the interaction of a flare generated shock front with a magnetic flux tube extending out into the corona over the flare. As the shock wave propagates through the flux tube, Alfven waves are developing and travelling up the tube toward each other, thereby accelerating electrons and protons by the Fermi mechanism and thus filling the top of the flux tube with energetic electrons. Radial oscillations develop as the shock front becomes parallel to the magnetic field direction and the intensity of the synchrotron radiation is modulated by these oscillations. An OSO-5 experiment detected a hard X-ray burst associated with the flare that produced modulated radio emission and X-ray modulations that are attributed to density fluctuations in the X-ray bursts.
Document ID
19730023146
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Frost, K. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: Significant Accomplishments in Sci.
Subject Category
Space Radiation
Accession Number
73N31878
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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