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

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
حسن بن محمد حسين باصرة Researcher  
عبدالرحمن بن علي سعيد ملاوي Researcher  
فـؤاد بن يوســف كمـال Researcher  
ياسين بن محمد أحمد المليكي Researcher  

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