Morphological Changes in a Large Sunspot Group before a Solar Flare during August 1972.

Abstract

This document investigates morphological changes in sunspot groups during solar flares. Using photoheliograms taken previously, the investigators traced the fast changes in the morphology of the main sunspot umbrae for the flare active group No. 223. A comparison of the photoheliograms divided into intervals of a few hours showed that although the overall area of the sunspot was extremely stable, the contours of the umbrae and their configurations were changing noticeably.

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Document Details

Document Type
Technical Report
Publication Date
Jul 23, 1977
Accession Number
ADA174724

Entities

People

  • M. P. Bleiweiss
  • Z. B. Korobova

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Astronomical Observatories
  • Classification
  • Ecology
  • Magnetic Fields
  • Magnetic Flux
  • Magnetic Phenomena
  • Materials
  • Observatories
  • Polarity
  • Security
  • Solar Flares
  • Stars

Readers

  • Mathematics or Statistics
  • Organic Chemistry
  • Space/Atmospheric Physics.