White-light and Hard X-ray source heights of the SOL2011-01-28T00:24 solar flare
Abstract
White-light continuum and hard X-ray emission in flares have strong correlations in time, but at present we do not have a clear idea about their height structures. Recently, several studies of the relative positions of the white-light and hard X-ray sources have been made using observations of flares near the solar limb. However, these results are still inconclusive due to the small number of flares observed. On 28 January 2011 a white-light flare (SOL2011-01-28T07:35) was observed on the western limb, observed simultaneously by the Helioseismic Magnetic Imager (HMI) on the Solar Dynamics Observatory (SDO), the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) and the Solar TErrestrial RElations Observatory (STEREO). This observation provides the heights of these emissions directly, limited only by the limb references for the two spacecraft, with almost no projection uncertainty. We report the results of this analysis and discuss our findings in terms of present models of particle acceleration and energy transport in the impulsive phase.Abstract (2,250 Maximum Characters): White-light continuum and hard X-ray emission in flares have strong correlations in time, but at present we do not have a clear idea about their height structures. Recently, several studies of the relative positions of the white-light and hard X-ray sources have been made using observations of flares near the solar limb. However, these results are still inconclusive due to the small number of flares observed. On 28 January 2011 a white-light flare (SOL2011-01-28T07:35) was observed on the western limb, observed simultaneously by the Helioseismic Magnetic Imager (HMI) on the Solar Dynamics Observatory (SDO), the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) and the Solar TErrestrial RElations Observatory (STEREO). This observation provides the heights of these emissions directly, limited only by the limb references for the two spacecraft, with almost no projection uncertainty. We report the results of this analysis and discuss our findings in terms of present models of particle acceleration and energy transport in the impulsive phase.
- Publication:
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AAS/Solar Physics Division Abstracts #44
- Pub Date:
- July 2013
- Bibcode:
- 2013SPD....44...86M