COLLOQUIUM Kandaswamy Subramanian, Ashoka University/MPA (Humboldt Award visitor)

Primordial Magnetic fields : The why, the whereof and challenges

Could magnetic fields be a relic from the early Universe, arising perhaps during the inflationary epoch when density fluctuations are also generated or in some other phase transition? Indeed, such a mechanism would be favoured, if the tentative indications, that magnetic fields at the sub-femto Gauss level pervade even the galactic voids regions, are firmed up. We discuss the prospects of such primordial field generation, their subsequent evolution and their possible observational signatures. A particular focus is on whether such fields can lead to sufficient baryon inhomogeneity early enough, to affect recombination.

Talk in presence and via Zoom:

https://uni-hamburg.zoom.us/j/66006535328?pwd=aGkrSjJIYmZjK0VpYlpGL0ZrdHg2UT09