The radio burst radiation of HALE 17590 active region

Details The radio burst radiation of HALE 17590 active region The radio burst radiation of HALE 17590 active region

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982chjss...2..269z&link_type=abstract

Chinese Journal of Space Sciences, vol. 2, Oct. 1982, p. 269-274. In Chinese, with abstract in English.

Computer Science

Radiant Flux Density, Solar Activity Effects, Solar Flares, Solar Radio Bursts, Sunspots, Brightness Temperature, Millimeter Waves, Solar X-Rays, Spectroheliographs

Scientific paper

Basing upon the observations of HALE 17590 active region, the radiation characteristics of radio bursts of this active region were investigated and it was found that: (1) in the rising period of development of the active region, there is also a corresponding change in intensity from weak to strong for each series of radio bursts, while the spectrum changes from monotonic to irregular or U type. (2) For large flare bursts, the occurrences of the precursor phase are earlier in radio bursts than in X-ray bursts. The precursor radiation in radio bursts often accompanies the activation of filaments and enhancement of brightness of plage and so on. (3) For large flare bursts, the time of impulsive maximum comes first at the 8 mm wavelength.

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