Relaxation of magnetic field relative to plasma density during solar flares

Sijie Yu, Yihua Yan, Baolin Tan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We investigated the variations of 74 microwave ZP structures observed by Chinese Solar Broadband Radio Spectrometer at 2.6-3.8 GHz in 9 solar flares, found that the ratio between the plasma density scale height LN and the magnetic field scale height LB in emission source displays a tendency of decrease during the flaring process, indicates that LB increases faster than the LN during solar flares. The detailed analysis of the step-wise decrease of LN/LB in three typical X-class flares reveals the magnetic field relaxation relative to the plasma density.

Original languageEnglish (US)
Title of host publicationSolar and Astrophysical Dynamos and Magnetic Activity
EditorsAlexander G. Kosovichev, Elisabete de Gouveia Dal Pino, Yihua Yan
Number of pages2
StatePublished - Aug 2012
Externally publishedYes

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Sun: flares
  • Sun: magnetic topology
  • Sun: radio radiation


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