Flaring arches. I - The major events of 1980 November 6 and 12

Details Flaring arches. I - The major events of 1980 November 6 and 12 Flaring arches. I - The major events of 1980 November 6 and 12

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988soph..116...91m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 116, no. 1, 1988, p. 91-118. Research supported by the Ministry for Education and Science o

Physics

36

H Alpha Line, Solar Flares, Solar X-Rays, Arcs, Chromosphere, Imaging Spectrometers, Radio Emission

Scientific paper

A typical flaring arch has three, and perhaps four consecutive phases: (1) An early phase characterized by the onset of hard X-ray burst and brightening of the secondary footpoint in Hα. (2) The main X-ray phase, during which X-ray emission propagates through the arch. (3) The main Hα phase, during which Hα emitting material propagates through the arch. And (4) an aftermath phase when some parts of the ejected material seem to flow in the reverse direction towards the primary site of injection. An extensive series of flaring arches was observed from 6 to 13 November, 1980 at the Big Bear Solar Observatory and with the Hard X-ray Imaging Spectrometer (HXIS) on board the SMM in a magnetically complex active region. The two most intense arches for which complete Hα and X-ray data are available are discussed in this paper.

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