The Diffuse gamma-ray background, light element abundances, and signatures of early massive star formation
May 12, 1992
6 pages
Published in:
- Astrophys.J.Lett. 393 (1992) L9-L11
DOI:
Report number:
- CFPA-TH-92-11,
- FERMILAB-PUB-92-115-A
Citations per year
Abstract: (ADS)
Attention is drawn to a potentially observable flux of diffuse extragalactic gamma rays produced by inelastic cosmic-ray interactions that is inevitably a by-product of spallation-synthesized Be. The epoch of cosmic ray-induced Population II light element nucleosynthesis is constrained to be at redshift greater than 0.5. A spectral feature in the diffuse extragalactic gamma-ray background with amplitude 0.1 above 10 MeV is predicted if the Be is synthesized at z less than 10. The possibility is discussed that the cosmic-ray flux responsible for Population II Be and B synthesis may be associated with a precursor hypothesized Population III.- galaxy
- photon: cosmic radiation
- cosmic radiation: flux
- flux: cosmic radiation
- beryllium: production
- production: beryllium
- boron: production
- production: boron
- pi0: radiative decay
- radiative decay: pi0
References(4)
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