GAMMA RAYS FROM SMALL SCALE STRUCTURES ON LONG COSMIC STRINGS
- 1 June 1993
- journal article
- Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics D
- Vol. 2 (2) , 183-195
- https://doi.org/10.1142/s0218271893000167
Abstract
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 μ less than Gμ=10−14 will have an observable effect. However, it is shown that the gamma-ray bursters cannot be attributed to long ordinary strings (or loops).Keywords
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