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Radio and Hard X-Ray Images of High-Energy Electrons in an X-Class Solar FlareWe present the first comparison between radio images of high-energy electrons accelerated by a solar flare and images of hard X-rays produced by the same electrons at photon energies above 100 keV. The images indicate that the high-energy X-rays originate at the footpoints of the loops dominating the radio emission. The radio and hard X-ray light curves match each other well and are quantitatively consistent with an origin in a single population of nonthermal electrons with a power-law index of around 4.5-5. The high-frequency radio spectral index suggests a flatter energy spectrum, but this is ruled out by the X-ray spectrum up to 8 MeV.
Document ID
20090006908
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
White, S. M.
Krucker, S.
Shibasaki, K.
Yokoyama, T.
Shimojo, M.
Kundu, Mukul R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Astrophysical Journal
Volume: 595
Subject Category
Solar Physics
Funding Number(s)
CONTRACT_GRANT: NNG05GM56G
Distribution Limits
Public
Copyright
Other

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