C A Clarkson et al 2003 Class. Quantum Grav. 20 1519 doi:10.1088/0264-9381/20/8/308
C A Clarkson1,2, A A Coley1, R Maartens3 and C G Tsagas2,3
Show affiliationsWe use the cosmic microwave background temperature anisotropy to place limits on large-scale magnetic fields in an inhomogeneous (perturbed Friedmann) universe. If no assumptions are made about the spacetime geometry, only a weak limit can be deduced directly from the CMB. In the special case where spatial inhomogeneity is neglected to first order, the upper limit is much stronger, i.e. a few × 10−9 G.
Issue 8 (21 April 2003)
Received 21 August 2002
Published 28 March 2003
C A Clarkson et al 2003 Class. Quantum Grav. 20 1519
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