Abstract Details

Name: Ratna Koley
Affiliation: Presidency University
Conference ID: ASI2017_1417
Title : Magnetogenesis in Bouncing Cosmology
Authors and Co-Authors : Sidhartha Samtani
Abstract Type : Poster
Abstract Category : General Relativity and Cosmology
Abstract : Magnetic fields are ubiquitous in the universe. Starting from planets and stars, large scale magnetic fields have been detected in galaxies and galaxy clusters. Recent observational evidence suggests that even the intergalactic medium in voids could host a weak magnetic field. An intriguing possibility is that cosmic magnetic fields are a relic from the early universe. In this work we have explored the possibility to have the seed magnetic field in matter bounce cosmology followed by an Ekpyrotic phase. The model chosen here, passes through the observational constraints set by Planck 2015 data. It has been shown that in the allowed range of parameter space, one can achieve the desired amount of primordial magnetic field sufficient for seeding presently observed fields without invoking any back reaction problem.