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The correlation of solar flare hard X-ray bursts with Doppler blueshifted soft X-ray flare emissionWe have investigated the temporal correlation between hard X-ray bursts and the intensity of Doppler blueshifted soft X-ray spectral line emission. We find a strong correlation for many events that have intense blueshifted spectral signatures and some correlation in events with modest blueshifts. The onset of hard X-rays frequently coincides to within a few seconds with the onset of blueshifted emission. The peak intensity of blueshifted emission is frequently close in time to the peak of the hard X-ray emission. Decay rates of the blueshifted and hard X-ray emission are similar, with the decay of the blueshifted emission tending to lag behind the hard X-ray emission in some cases. There are, however, exceptions to these conclusions, and, therefore, the results should not be generalized to all flares. Most of the data for this work were obtained from instruments flown on the Japanese Yohkoh solar spacecraft.
Document ID
19950034800
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Bentley, R. D.
(University College London Holmbury, United Kingdom)
Doschek, G. A.
(Naval Research Laboratory, Washington, DC United States)
Simnett, G. M.
(University of Birmingham Birmingham, United Kingdom)
Rilee, M. L.
(Cornell University Ithaca, NY, United States)
Mariska, J. T.
(Naval Research Laboratory, Washington, DC United States)
Culhane, J. L.
(University College London Holmbury, United Kingdom)
Kosugi, T.
(National Astronomical Observatory Tokyo, Japan)
Watanabe, T.
(National Astronomical Observatory Tokyo, Japan)
Date Acquired
August 16, 2013
Publication Date
January 20, 1994
Publication Information
Publication: Astrophysical Journal, Part 2
Volume: 421
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
95A66399
Funding Number(s)
CONTRACT_GRANT: NSF ATM-90-20719
Distribution Limits
Public
Copyright
Other

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