Department of Physics, Presidency University organizes weekly lectures by eminent scientists across the globe where they talk about latest and cutting edge research and ideas. As a unique academic event in the country, this sets the stage for interaction with researchers from a diverse background in Physics and even outside of it. The lectures are supposed to be held on each Wednesday generally in the afternoon depending on the availability of the speakers.
Are the intergalactic magnetic fields (IGMF) primordial?
Prof. Ratna Koley
Presidency University, Kolkata
Wednesday, 22 February, 2 p.m., PLT 2
Magnetic fields have been widely observed in the universe. From planets and stars, all the way to galaxy clusters magnetic fields of considerable
strength and size have been repeatedly observed. Recent observational evidence also suggests that even the intergalactic medium in voids could host
a weak magnetic field. Despite of their widespread presence, however, the origin of cosmic magnetic fields is still a mystery. In this talk we would like
to address the question whether such fields are of cosmological origin? The idea of primordial magnetogenesis is attractive because it makes the
large scale magnetic fields easier to e xplain. Nevertheless, this idea is not problem free, with a number of issues remaining open and matter of
debate. We will elaborate on the aspects of primordial magnetogenesis and discuss the advantages and shortcomings of this proposal.
A L L A R E W E L C O M E !