Astronomy and Astrophysics – Astronomy
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spd....28.0155h&link_type=abstract
American Astronomical Society, SPD meeting #28, #01.55; Bulletin of the American Astronomical Society, Vol. 29, p.889
Astronomy and Astrophysics
Astronomy
Scientific paper
A large 4B/X5 solar flare erupted on the Sun on March 26, 1991, at 20:26 UT. The event was characterized by double peaks in emission in radio, soft X-rays, and high energy (>100 Mev) gamma-ray wavelengths. The Marshall Space Flight Center vector magnetograph obtained magnetic field data prior to and during this flare, and H-alpha images of the flare were video taped from the H-alpha telescope coaligned with the magnetograph. An examination of a time series of vector magnetograms showed that emerging flux near a large filament was the probable trigger of the flare; the H-alpha images showed the eruption of this filament which did not reform following the flare. We analyzed the H-alpha video images for the H-alpha emission time profile so as to determine the H-alpha counterparts to the two energetic events that produced the double peaks in the high energy data. We also analyzed the magnetic field data in those areas to ascertain the field morphology associated with the two energetic events.
Akimov Vladlen V.
Hagyard Mona J.
Hathaway David H.
Kurt Victoria G.
Stark B. A.
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