Gamma-ray precursors of solar flares

Details Gamma-ray precursors of solar flares Gamma-ray precursors of solar flares

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...90..645r&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 90, no. 2, p. 645-648

Astronomy and Astrophysics

Astrophysics

15

Gamma Ray Bursts, High Energy Electrons, Solar Activity Effects, Solar Flares, Gamma Ray Spectrometers, Line Spectra, Solar Maximum Mission, Spatial Resolution

Scientific paper

Bursts have been observed by the gamma-ray spectrometer on Solar Maximum Mission (SMM) at medium-and high-energy gamma-rays that precede the flare maximum. The negligible contribution of nuclear lines in the spectra of these events and their impulsive appearance suggests that they are hard-electron-dominated events superposed on the flares. Spatial resolution at gamma-ray energies will be necessary to decide whether this kind of bursts is cospatial with the flares or whether they occur in the flares' vicinity.

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