Size of the X-Ray Kernel of the Large 1979 August 20 Solar Flare.

Abstract

At the time of the intense Class X5 solar flare on 1979 August 20, monochromatic small raster maps near 7 A were recorded of the flaring active region with 20-in. resolution (FWHM) by the SOLEX Solar X-Ray Spectrometer/Spectroheliograph. From these maps, the spatial extent of the x-ray kernel during the rise of this flare at about 0912 UT was determined to be less than 28 inches. The electron density in the hot flare plasma was estimated to be above 10 to the 11th power/cu cm. This is the first soft x-ray measurement of the angular size of such an intense flare.

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Document Details

Document Type
Technical Report
Publication Date
Nov 28, 1980
Accession Number
ADA093764

Entities

People

  • David L. Mckenzie
  • Peter B. Landecker

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Artificial Satellites
  • Charged Particles
  • Composite Materials
  • Detectors
  • Electron Density
  • Electrons
  • Materials
  • Materials Science
  • Measurement
  • Physics Laboratories
  • Semiconductor Devices
  • Soft X Rays
  • Solar X Rays
  • Space Systems
  • Spacecraft
  • X Rays

Fields of Study

  • Physics

Readers

  • Computer Vision.
  • Solar Physics

Technology Areas

  • Microelectronics