Gamma Rays from Small Scale Structures on Long Cosmic Strings

Details Gamma Rays from Small Scale Structures on Long Cosmic Strings Gamma Rays from Small Scale Structures on Long Cosmic Strings

1993-04-27

arxiv.org/abs/hep-ph/9304306v1

Int.J.Mod.Phys. D2 (1993) 183-196

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 6 Figures available from the authors, phyzzx, BROWN-HET-892

Scientific paper

10.1142/S0218271893000167

The formation of cusps on long cosmic strings is discussed and the probability of cusp formation is estimated. The energy distribution of the gamma-ray background due to cusp annihilation on long strings is calculated and compared to observations. Under optimistic assumptions about the cusp formation rate, we find that strings with a mass per unit length $\mu$ less than ${G\mu} = 10^{-14}$ will have an observable effect. However, it is shown that the gamma-ray bursters can not be attributed to long ordinary strings (or loops).

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