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Scientific article
English

Primordial magnetic fields and gravitational waves

Contributors

Caprini, Chiara

Published in

Astronomische Nachrichten, vol. 327, no. 5-6, p. 422-423

Publication date

2006

Abstract

We analyse the generation of tensor metric perturbations by the anisotropic stresses of a primordial magnetic field. First we present the implication of causality on the initial spectrum of the magnetic field, and then derive strong limits on its amplitude by applying the nucleosynthesis bound on the gravitational waves (GW) induced by the field. Finally we discuss the CMB tensor spectrum generated by the magnetic field, presenting analytical approximations for the temperature anisotropies and polarisation signal by a possible helical component in the magnetic field.

Keywords

  • Magnetic fields
  • Gravitational waves
  • Cosmic microwave background

UNIGE affiliation entities

Citation (ISO format)

CAPRINI, Chiara. Primordial magnetic fields and gravitational waves. In: Astronomische Nachrichten, 2006, vol. 327, n° 5-6, p. 422–423. doi: 10.1002/asna.200610546

Main files (1)

Article (Published version)

Identifiers

Journal ISSN

0004-6337
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Technical informations

Creation

27/01/2016 11:13:00

First validation

27/01/2016 11:13:00

Update

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