Shinsuke Ideguchi (Kumamoto University)

Capability of Wide-band Polarimetry for Probing the Intergalactic Magnetic Fie --Shinsuke Ideguchi Colloquium

Abstract

Magnetic fields can be generated by a variety of mechanisms
in early universe such as inflation, phase transition, density fluctuations
and reionization. These fields, expected to be preserved in intergalactic
regions as intergalactic magnetic fields (IGMFs), contain useful information
to probe these phenomena in early universe. However, they are too tiny to
be measured by the conventional methods using CMB anisotropies and
Faraday rotation. In this talk, we introduce a promising method so-called
QU-fitting which is based on the Faraday tomography and we report a
capability of the method with ongoing wide-band radio telescopes such as
ASKAP, LOFAR and GMRT.