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Kosowsky, Arthur and Mack, Andrew and Kahniashvili, Tina (2001) Gravitational radiation from cosmological turbulence. Physical Review D, 66.
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Abstract
An injection of energy into the early Universe on a given characteristic length scale will result in turbulent motions of the primordial plasma. We calculate the stochastic background of gravitational radiation arising from a period of cosmological turbulence, using a simple model of isotropic Kolmogoroff turbulence produced in a cosmological phase transition. We also derive the gravitational radiation generated by magnetic fields arising from a dynamo operating during the period of turbulence. The resulting gravitational radiation background has a maximum amplitude comparable to the radiation background from the collision of bubbles in a first-order phase transition, but at a lower frequency, while the radiation from the induced magnetic fields is always subdominant to that from the turbulence itself. We briefly discuss the detectability of such a signal.
| Item Type: | Article |
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| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Depositing User: | Prof. Tina Kahniashvili |
| Date Deposited: | 29 Jan 2014 19:48 |
| Last Modified: | 27 Mar 2015 06:53 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/739 |
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