Gamma-rays and neutrons as a probe of the proton spectrum during the solar flare of 1988 December 16

Details Gamma-rays and neutrons as a probe of the proton spectrum during the solar flare of 1988 December 16 Gamma-rays and neutrons as a probe of the proton spectrum during the solar flare of 1988 December 16

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..264..253d&link_type=abstract

In: Particle acceleration in cosmic plasmas; Proceedings of the Workshop, Bartol Research Inst., Newark, DE, Dec. 4-6, 1991 (A93

Physics

3

Energetic Particles, Gamma Ray Spectra, Solar Flares, Solar Maximum Mission, Solar Neutrons, Solar Protons, Energy Spectra, Gamma Ray Spectrometers

Scientific paper

We have previously reported on high-energy gamma-rays and neutrons from the flare of 1988 December 16 detected by the Gamma-Ray Spectrometer on the SMM satellite. In this paper, we present results on gamma-ray lines seen by the same detector during this flare. Together, these measurements constitute a powerful probe of the proton spectrum that produces the flare neutrals. Analysis of the data suggests a Bessel-function proton spectrum with a shape parameter (alpha T) of 0.054 +/- 0.004 and the number of protons above 30 MeV equal to (9.0 +/- 0.9) x 10 exp 32. The number of neutrons detected from this flare is much smaller than what is predicted from an isotropic distribution of the protons, indicating that the distribution may be nonisotropic.

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