Gravitational waves and cosmic magnetism; a cosmological approach

Abstract

We present the formalism for the covariant treatment of gravitational radiation in a magnetized environment and discuss the implications of the field for gravity waves in the cosmological context. Our geometrical approach brings to the fore the tension properties of the magnetic force lines and reveals their intricate interconnection to the spatial geometry of a magnetised spacetime. We show how the generic anisotropy of the field can act as a source of gravitational wave perturbations and how, depending on the spatial curvature distortion, the magnetic tension can boost or suppress waves passing through a magnetized region.

Minor changes. References added. To appear in Class. Quantum Grav

References in corpus (4)

• Microwave Background Signatures of a Primordial Stochastic Magnetic Field
• Gravitational wave production: A strong constraint on primordial magnetic fields
• Magnetic tension and the geometry of the universe
• Magnetized gravitational waves

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• Gravitational wave amplification of seed magnetic fields
• Resonant amplification of magnetic seed fields by gravitational waves in the early universe
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• New Primordial-Magnetic-Field Limit from The Latest LIGO S5 data
• Primordial magnetic seed field amplification by gravitational waves
• Gravitational-wave implications for structure formation: A second-order approach
• Gravitational wave induced baryon acoustic oscillations