INTEGRAL/SPI Observation of the 2003 Oct 28 Solar Flare

Details INTEGRAL/SPI Observation of the 2003 Oct 28 Solar Flare INTEGRAL/SPI Observation of the 2003 Oct 28 Solar Flare

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.552..669g&link_type=abstract

Proceedings of the 5th INTEGRAL Workshop on the INTEGRAL Universe (ESA SP-552). 16-20 February 2004, Munich, Germany. Scientific

Physics

18

Scientific paper

The very powerful X-class solar flare in 2003 Oct. 28 was detected by several instruments on board INTEGRAL as an intense flash of about 15 minutes in the hard-X and γ-ray bands. Despite the non-standard incidence of the solar γ-rays, time-resolved spectra including several nuclear γ-ray lines and a continuum at high energy were obtained with SPI. For the first time, in addition to the 2.2 MeV 1 H neutron capture line, the 4.4 MeV 12 C* and 6.1 MeV 16 O* nuclear interaction lines, the 6.9 and 7.1 MeV lines from 16 O* are clearly resolved. Flux evolutions on a fraction of minute scale show significant differences between lines and continuum. Several spectra have been extracted during the flash. A preliminary analysis and interpretation of the time profiles and the spectra, including the 6.9 and 7.1 MeV 16 O* lines will be given.

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