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Galaxies 2018, 6(4), 118; https://doi.org/10.3390/galaxies6040118

Strategy to Explore Magnetized Cosmic Web with Forthcoming Large Surveys of Rotation Measure

Mizusawa VLBI Observatory, National Astronomical Observatory of Japan (NAOJ), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Received: 3 September 2018 / Revised: 13 November 2018 / Accepted: 13 November 2018 / Published: 16 November 2018
(This article belongs to the Special Issue The Power of Faraday Tomography)
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Abstract

The warm-hot intergalactic medium (WHIM) is a candidate for the missing baryons in the Universe. If the WHIM is permeated with the intergalactic magnetic field (IGMF), the Faraday rotation measure (RM) of the WHIM is imprinted in linearly-polarized emission from extragalactic objects. In this article, we discuss strategies to explore the WHIM’s RM from forthcoming radio broadband and wide-field polarization sky surveys. There will be two observational breakthroughs in the coming decades; the RM grid and Faraday tomography. They will allow us to find ideal RM sources for the study of the IGMF and give us unique information of the WHIM along the line of sight. View Full-Text
Keywords: intergalactic medium; large-scale structure of the Universe; magnetic fields; polarization; techniques; polarimetric intergalactic medium; large-scale structure of the Universe; magnetic fields; polarization; techniques; polarimetric
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Akahori, T. Strategy to Explore Magnetized Cosmic Web with Forthcoming Large Surveys of Rotation Measure. Galaxies 2018, 6, 118.

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