Constraints from pion production on the spectral hardness of the low energy cosmic rays in Orion

Details Constraints from pion production on the spectral hardness of the low energy cosmic rays in Orion Constraints from pion production on the spectral hardness of the low energy cosmic rays in Orion

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1054t&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1054-1058 (1997).

Computer Science

1

Molecular Clouds, H2 Clouds, Dense Clouds, And Dark Clouds, Cosmic Rays, Gamma-Ray Sources, Gamma-Ray Bursts, Gamma-Ray, Elementary Particle Processes

Scientific paper

The gamma ray line emission observed with COMPTEL from Orion is attributed to the interaction within the molecular cloud of fast nuclei resulting from diffusive shock acceleration of a seed source. We have carried out detailed calculations of pion production by such low energy cosmic rays enriched in heavy elements. In the light of the EGRET observations of the molecular complex, we show that the characteristic energy of the accelerated particles spectrum can be quite large, but should not exceed 100 MeV/nucleon in order to not overproduce the high energy gamma ray emission.

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