Gamma-ray lines from interstellar grains

Details Gamma-ray lines from interstellar grains Gamma-ray lines from interstellar grains

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...211l..19l&link_type=abstract

Astrophysical Journal, vol. 211, Jan. 1, 1977, pt. 2, p. L19-L22.

Other

23

Cosmic Rays, Gamma Rays, Interstellar Matter, Interstellar Radiation, X Ray Spectra, Line Spectra, Spatial Distribution

Scientific paper

The letter points out the existence of a hitherto unknown component of gamma-ray line emission: very narrow (FWHM less than 5 keV) lines from interstellar grains. The prime candidate for detection is the line at 6.129 MeV from O-16, but other very narrow lines could also be detected at 0.847, 1.369, 1.634, 1.779, and 2.313 MeV from Fe-56, Mg-24, Ne-20, Si-28, and N-14. Measurements of this line emission can provide information on the composition, size, and spatial distribution of interstellar grains.

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