Abstract
We examine the spectrum of gravitational radiation emitted by a network of cosmic strings, with emphasis on the observational constraints and the opportunities for detection. The analysis improves over past work, as we use a phenomenological model for the radiation spectrum emitted by a cosmic string loop. This model attempts to include the effect of the gravitational back reaction on the radiation emission by an individual loop with a high frequency cutoff in the spectrum. Comparison of the total spectrum due to a network of strings with the recently improved bound on the amplitude of a stochastic gravitational wave background, due to measurements of noise in pulsar signal arrival times, allows us to exclude a range of values of μ, the cosmic string linear mass density, for certain values of cosmic string and cosmological parameters. We find the conservative bound Gμ/c2
Original language | English |
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Pages (from-to) | 7146-7152 |
Number of pages | 6 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 54 |
Issue number | 12 |
Publication status | Published - 15 Dec 1996 |