A Correlation Between 4-8 MeV Gamma-Ray-Line Fluence and > 50 Kev X-Ray Fluence in Large Solar Flares

Abstract

For large flares observed by the Solar Maximum Mission (SMM) satellite from 1980-1982, we find a reasonably good correlation between 4-8 MeV gamma-ray-line (GRL) fluences and >50 keV hard X-ray fluences. We find no compelling evidence for a distinct population of large hard X-ray flares that lack commensurate GRL emission. Our results are consistent with the acceleration of the bulk of the approx. 100 keV electrons and approx. 10 MeV protons (i.e., the populations of these species that interact in the solar atmosphere to produce hard X-ray and GRL emissions) by a common process in large flares of both long and short durations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA278254

Entities

People

  • B. R. Dennis
  • E. W. Cliver
  • N. B. Crosby

Organizations

  • Phillips Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Artificial Satellites
  • Bremsstrahlung
  • Detection
  • Detectors
  • Electrons
  • Emission
  • Energy
  • Gamma Rays
  • Hard X Rays
  • High Energy
  • Solar Flares
  • Solar Physics
  • Spacecraft
  • Spectra
  • X Rays
  • X-Ray Detectors

Fields of Study

  • Physics

Readers

  • Solar Physics

Technology Areas

  • Microelectronics
  • Space