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Pranjal Trivedi, University of Delhi
Tuesday 07 July 2015, 16:00-17:00
CMB Non-Gaussianity as a Probe of Primordial Magnetic Fields
- đ¤ Speaker: Pranjal Trivedi, University of Delhi
- đ Date & Time: Tuesday 07 July 2015, 16:00 - 17:00
- đ Venue: Sackler Lecture Theatre, Institute of Astronomy
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Paula younger
Abstract
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.
Series This talk is part of the Kavli Institute for Cosmology - Summer Series series.
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