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arxiv: astro-ph/0111483 · v3 · pith:KB3MORP7new · submitted 2001-11-26 · 🌌 astro-ph

Gravitational Radiation From Cosmological Turbulence

Arthur Kosowsky (Rutgers , IAS) , Andrew Mack (Rutgers) , Tinatin Kahniashvili (Georgian Academy of Sciences) This is my paper
classification 🌌 astro-ph
keywords radiationturbulencegravitationalbackgroundcosmologicalarisingfieldsmagnetic
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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.

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