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Interpretation of rapid rises in hard X-rays and microwaves with the thermal conduction front modelImpulsive hard X-ray and microwave bursts with rise times from 0.1 to 10 seconds are discussed. Source areas calculated by the method of Crannell et al. (1978) were compared with source areas determined from Hinotori and the Hard X-ray Imaging Spectrometer (HXIS) images. The agreement strongly suggests that the method is valid. If the thermal conduction front model for the hard X-ray and microwave source is adopted, then the method enables derivation of area, density, magnetic field, and rise time from hard X-ray and microwave spectral observations. This approach was used to derive these parameters for several rapid impulsive rises in the flares of July 1, 1980, and May 21, 1984. It is shown that the model provides a consistent interpretation of the observations of these impulsive increases. Indeed, the model provides a way to calculate rise times from spectra alone (to within a factor of about three) over more than two orders of magnitude.
Document ID
19870012355
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Batchelor, D. A.
(Johns Hopkins Univ. Silver Spring, MD, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1986
Publication Information
Publication: NASA. Goddard Space Flight Center Rapid Fluctuations in Solar Flares
Subject Category
Solar Physics
Accession Number
87N21788
Funding Number(s)
CONTRACT_GRANT: NSF ATM-83-12720
CONTRACT_GRANT: NSG7-055
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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