PROJECTED CONSTRAINTS ON THE COSMIC (SUPER)STRING TENSION WITH FUTURE GRAVITATIONAL WAVE DETECTION EXPERIMENTS
We present projected constraints on the cosmic string tension, G mu /c super(2), that could be achieved by future gravitational wave detection experiments and express our results as semi-analytic relations of the form G mu ([Omega] sub(gw)h super(2))/c super(2 ), to allow for direct computation of t...
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Veröffentlicht in: | The Astrophysical journal 2013-02, Vol.764 (1), p.1-5 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We present projected constraints on the cosmic string tension, G mu /c super(2), that could be achieved by future gravitational wave detection experiments and express our results as semi-analytic relations of the form G mu ([Omega] sub(gw)h super(2))/c super(2 ), to allow for direct computation of the tension constraints for future experiments. These results can be applied to new constraints on [Omega] sub(gw)h super(2) as they are imposed. Experiments operating in different frequency bands probe different parts of the gravitational wave spectrum of a cosmic string network and are sensitive to different uncertainties in the underlying cosmic string model parameters. We compute the gravitational wave spectra of cosmic string networks based on the one-scale model, covering all the parameter space accessed by each experiment that is strongly dependent on the birth scale of loops relative to the horizon, alpha . The upper limits on the string tension avoid any assumptions on the model parameters. We perform this investigation for Pulsar Timing Array experiments of different durations, as well as ground-based and space-borne interferometric detectors. |
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ISSN: | 0004-637X 1538-4357 |
DOI: | 10.1088/0004-637X/764/1/108 |