The SMM Atlas of Gamma-Ray flares (Vestrand+, 1999)

Details The SMM Atlas of Gamma-Ray flares (Vestrand+, 1999) The SMM Atlas of Gamma-Ray flares (Vestrand+, 1999)

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..21200409v&link_type=abstract

VizieR On-line Data Catalog: J/ApJS/120/409. Originally published in: 1999ApJS..120..409V

Statistics

Methodology

Atlases, Gamma Rays, Solar System

Scientific paper

We present a compilation of data for all 258 gamma-ray flares detected above 300 keV by the Gamma Ray Spectrometer (GRS) aboard the Solar Maximum Mission satellite. This gamma-ray flare sample was collected during the period from 1980 February to 1989 November; covering the latter half of the 21st solar sunspot cycle and the onset of the 22d solar sunspot cycle. We describe the SMM/GRS instrument, its in-orbit operation, and the principal data reduction methods used to derive the gamma-ray flare properties. Utilizing measurements for 185 flares that were sufficiently intense to allow the derivation of gamma-ray spectra, we present an atlas of time profiles and gamma-ray spectra. The flare parameters derived from the gamma-ray spectra include bremsstrahlung fluence and best-fit power-law parameters, narrow nuclear line fluence, positron annihilation line fluence, neutron capture line fluence, and an indication of whether or not emissions greater than 10 MeV were present. Since a uniform methodology was adopted for deriving the parameters, this atlas should be very useful for future statistical and correlative studies of solar flares. (1 data file).

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