Abstract
The possibility that the processes responsible for the Cosmic X-ray Background (CXB) would also produce an e--e+ annihilation feature is examined. Under the assumption that these processes are thermal, the absence of a strong e--e+ annihilation feature places constraints on the compactness (L/R ratio) of these sources. Observations favor sources of small compactness ratio.
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© 1983 IAU
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Kazanas, D., Shafer, R.A. (1983). The e+-e- Annihilation Line and The Cosmic X-Ray Background. In: Abell, G.O., Chincarini, G. (eds) Early Evolution of the Universe and its Present Structure. International Astronomical Union / Union Astronomique Internationale, vol 104. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7220-9_3
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DOI: https://doi.org/10.1007/978-94-009-7220-9_3
Publisher Name: Springer, Dordrecht
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