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  • SOLAR PHYSICS  (2)
  • 1985-1989  (2)
  • 1980-1984
  • 1970-1974
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  • 1985-1989  (2)
  • 1980-1984
  • 1970-1974
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  • 1
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    Why P/OF should look for evidences of over-dense structures in solar flare hard X-ray sources (1986)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: 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 10 to the 14th power/cu cm. Thus, we recommend that P/OF search for evidences of over-dense structures in HXR images obtained simultaneously with optical observations of flares.
    Keywords: SOLAR PHYSICS
    Type: NASA. Marshall Space Flight Center Solar Flares and Coronal Physics Using P(OF as a Research Tool; p 142-145
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Characteristics of the white-light source in the 1981 April 24 solar flare (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Observations of the white-light solar flare event of April 24, 1981 are presented. The observations were carried out in the optical, hard X-ray, and radio wavelengths from land-based observatories and from the International Sun-Earth Explorer (ISEE-3) satellite. Time-intensity profiles were derived for three lines of continuum emissions. The derived profiles are interpreted in terms of the energetics of the flare, and the role of energetic electrons in the production of optical continuum emission is examined in detail.
    Keywords: SOLAR PHYSICS
    Type: AD-A153580 , AFGL-TR-85-0068 , Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X); 290; L45-L48
    Format: text
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    NASA TECHNICAL REPORTS
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