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Phase Transition Generated Cosmological Magnetic Field at Large Scales

Kahniashvili, Tina and Tevzadze, Alexander and Ratra, Bharat (2004) Phase Transition Generated Cosmological Magnetic Field at Large Scales. Astrophysical Journal, 726. pp. 78-86.

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Abstract

We constrain a primordial magnetic field (PMF) generated during a phase transition (PT) using the big bang nucleosynthesis bound on the relativistic energy density. The amplitude of the PMF at large scales is determined by the shape of the PMF spectrum outside its maximal correlation length scale. Even if the amplitude of the PMF at 1 Mpc is small, PT-generated PMFs can leave observable signatures in the potentially detectable relic gravitational wave background if a large enough fraction (1%-10%) of the thermal energy is converted into the PMF.

Item Type: Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Depositing User: Prof. Tina Kahniashvili
Date Deposited: 27 Jan 2014 09:00
Last Modified: 27 Mar 2015 06:55
URI: http://eprints.iliauni.edu.ge/id/eprint/652

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