Faculty of Sciences

Document Details

Document Type	:	Article In Journal
Document Title	:	FLARE DEVELOPMENT IN ACTIVE-REGION NOAA-6891, 30 OCTOBER, 1991 FLARE DEVELOPMENT IN ACTIVE-REGION NOAA-6891, 30 OCTOBER, 1991
Document Language	:	Arabic
Abstract	:	A great sunspot group of October 1991 (NOAA 6891 at L = 189, B = -10) was observed, in which an eruptive flare of importance (X2.5/3B) has been reported. A Ca II-line 3933 Angstrom filter was used, and during a time interval of 3 hours more than 90 frames were taken, using a CCD camera. The progress and the distribution in size of the two main flare points have been obtained; they covered an area of about 1800 millionths of the solar disk within a time interval of about 24 min. The average apparent horizontal velocity was 70 km s(-1).
Journal Name	:	SOLAR PHYSICS
Volume	:	158
Issue Number	:	2
Publishing Year	:	1995 AH
Added Date	:	Monday, June 16, 2008

Researchers

MyKau	-800-11
69528	-800-11