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SUMMARY:CMB Non-Gaussianity as a Probe of Primordial Magnetic Fields - Pra
 njal Trivedi\, University of Delhi
DTSTART:20150707T150000Z
DTEND:20150707T160000Z
UID:TALK60095@talks.cam.ac.uk
CONTACT:Paula younger
DESCRIPTION:Recent evidence for an intergalactic magnetic field pervading 
 the Universe lends support to a primordial origin for cosmic magnetic fiel
 ds.  The non-Gaussianity induced by magnetic fields in the CMB (Cosmic Mic
 rowave Background radiation) is a sensitive probe of large-scale primordia
 l magnetic fields. Comparing our theoretical results on the magnetic bispe
 ctrum and trispectrum with the latest Planck observations\, we place an im
 proved sub-nanoGauss constraint on the present amplitude of large-scale pr
 imordial magnetic fields.
LOCATION:Sackler Lecture Theatre\, Institute of Astronomy
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