University of Cambridge > Talks.cam > Kavli Institute for Cosmology - Summer Series > CMB Non-Gaussianity as a Probe of Primordial Magnetic Fields

CMB Non-Gaussianity as a Probe of Primordial Magnetic Fields

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Recent evidence for an intergalactic magnetic field pervading the Universe lends support to a primordial origin for cosmic magnetic fields. The non-Gaussianity induced by magnetic fields in the CMB (Cosmic Microwave Background radiation) is a sensitive probe of large-scale primordial magnetic fields. Comparing our theoretical results on the magnetic bispectrum and trispectrum with the latest Planck observations, we place an improved sub-nanoGauss constraint on the present amplitude of large-scale primordial magnetic fields.

This talk is part of the Kavli Institute for Cosmology - Summer Series series.

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