Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-03-21
Phys.Rev.D76:024001,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
1+15 pages, 7 figures
Scientific paper
10.1103/PhysRevD.76.024001
We consider a population of small, high-velocity cosmic string loops. We assume the typical length of these loops is determined by the gravitational radiation scale and use the results of \cite{Polchinski:2007rg} which pointed out their highly relativistic nature. A study of the gravitational wave emission from such a population is carried out. The large Lorentz boost involved causes the lowest harmonics of the loops to fall within the frequency band of the LIGO detector. Due to this feature the gravitational waves emitted by such loops can be detected in a periodic search rather than in burst or stochastic analysis. It is shown that, for interesting values of the string tension ($10^{-10}\lsim G\mu\lsim 10^{-8}$) the detector can observe loops at reasonably high redshifts and that detection is, in principle, possible. We compute the number of expected observations produced by such a process. For a 10 hour search we find that this number is of order $O(10^{-4})$. This is a consequence of the low effective number density of the loops traveling along the line of sight. However, small probabilities of reconnection and longer observation times can improve the result.
Dubath Florian
Rocha Jorge V.
No associations
LandOfFree
Periodic Gravitational Waves From Small Cosmic String Loops does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Periodic Gravitational Waves From Small Cosmic String Loops, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Periodic Gravitational Waves From Small Cosmic String Loops will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-382218