White-light flares of 1991 June in the NOAA region 6659

Details White-light flares of 1991 June in the NOAA region 6659 White-light flares of 1991 June in the NOAA region 6659

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasj...44l...7s&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 44, no. 1, p. L7-L13.

Astronomy and Astrophysics

Astronomy

33

Solar Flares, Solar X-Rays, Sunspots, H Alpha Line, Solar Activity, Solar Prominences, Visible Spectrum

Scientific paper

Flare activities in an active region of NOAA 6659 were observed on the sun in June 1991. Three white-light flares were observed on June 4, 9, and 11. Data obtained show that two kinds of white-light brightenings were found: impulsive patches with a time scale of several tens of seconds, and the more stable patches moving together with the H-alpha ribbons.

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