Why P/OF should look for evidences of over-dense structures in solar flare hard X-ray sources.
Abstract
White-light and hard X-ray (HXR) observations of two white-light flares (WLFs) show that if the radiative losses in the optical continuum are powered by fast electrons directly heating the WLF source, then the column density constraints imposed by the finite range of the electrons requires that the WLF consist of an over-dense region in the chromosphere, with density exceeding 1014cm-3. Thus, the authors recommend that P/OF search for evidences of over-dense structures in HXR images obtained simultaneously with optical observations of flares.
- Publication:
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NASA Conference Publication
- Pub Date:
- 1986
- Bibcode:
- 1986NASCP2421..142N
- Keywords:
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- Solar Flares:Hard X Rays