RHESSI Observations of a Simple Large X-ray Flare on 11-03-2003 |
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Wei Liu Submitted: 2004-01-20 01:28
We present data analysis and interpretation of a simple X-class flare observed with
RHESSI on November 3, 2003. In contrast to other X-class flares observed previously, this
flare shows a very simple morphology with well defined looptop (LT) and footpoint (FP)
sources. The almost monotonic upward motion of the LT source and increase in separation of
the two FP sources are consistent with magnetic reconnection models proposed for
solar flares. In addition, we find that the source motions are relatively slower during the
more active phases of hard X-ray emission; the emission centroid of the LT source shifts
toward higher altitudes with the increase of energy; the separation between the LT emission
centroids at two different photon energies is anti-correlated with the FP flux. Non-uniformity
of the reconnecting magnetic fields could be a possible explanation of these features.
Authors: Wei Liu, Yan Wei Jiang, Siming Liu, Vahé Petrosian
Projects: RHESSI
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Publication Status: ApJL (in press)
Last Modified: 2004-06-16 12:56
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