Redshift evolution of extragalactic rotation measures

Abstract

We obtained rotation measures of 2642 quasars by cross-identification of the most updated quasar catalog and rotation measure catalog. After discounting the foreground Galactic Faraday rotation of the Milky Way, we get the residual rotation measure (RRM) of these quasars. We carefully discarded the effects from measurement and systematical uncertainties of RRMs as well as large RRMs from outliers, and get marginal evidence for the redshift evolution of real dispersion of RRMs which steady increases to 10 rad m${}^{-2}$ from $z=0$ to $z\sim 1$ and is saturated around the value at higher redshifts. The ionized clouds in the form of galaxy, galaxy clusters or cosmological filaments could produce the observed RRM evolutions with different dispersion width. However current data sets can not constrain the contributions from galaxy halos and cosmic webs. Future RM measurements for a large sample of quasars with high precision are desired to disentangle these different contributions.

9 pages, 6 figures. Accepted by MNRAS

References in corpus (21)

• A New Radio - X-Ray Probe of Galaxy Cluster Magnetic Fields
• Turbulence and Magnetic Fields in the Large Scale Structure of the Universe
• A catalog of 132,684 clusters of galaxies identified from Sloan Digital Sky Survey III
• Strong magnetic fields in normal galaxies at high redshifts
• Cosmological Magnetic Fields Limits in an Inhomogeneous Universe
• An improved map of the Galactic Faraday sky
• Pulsar rotation measures and the magnetic structure of our Galaxy
• A Survey of Extragalactic Faraday Rotation at High Galactic Latitude: The Vertical Magnetic Field of the Milky Way towards the Galactic Poles
• A Global Probe of Cosmic Magnetic Fields to High Redshifts
• A Faraday Rotation Search for Magnetic Fields in Large Scale Structure
• Integrated Polarization of Sources at lambda ~1m and New Rotation Measure Ambiguities
• Rotation Measures of Radio Sources in Hot Galaxy Clusters
• Structure in the Rotation Measure Sky
• Faraday Rotation Measure due to the Intergalactic Magnetic Field
• Faraday Rotation Measure due to the Intergalactic Magnetic Field II: the Cosmological Contribution
• The interpretation of Rotation Measures in the presence of inhomogeneous foreground screens
• A compiled catalog of rotation measures of radio point sources
• A New Catalog of Faraday Rotation Measures and Redshifts for Extragalactic Radio Sources
• MgII absorption systems with W_0 > 0.1 Åfor a radio selected sample of 77 QSOs and their associated magnetic fields at high redshifts
• Dependence of Residual Rotation Measure (RRM) on Intervening MgII Absorbers at Cosmic Distances
• Magnetic Fields in the Large Scale Structure from Faraday Rotation measurements

Cited by in corpus (27)

• A fast radio burst source at a complex magnetised site in a barred galaxy
• Diverse polarization angle swings from a repeating fast radio burst source
• The Gamma-Ray Window to Intergalactic Magnetism
• Faraday Rotation from Magnesium II Absorbers towards Polarized Background Radio Sources
• Magnetic field evolution in cosmic filaments with LOFAR data
• Observations of a nearby filament of galaxy clusters with the Sardinia Radio Telescope
• Fast Radio Burst dispersion measures and rotation measures and the origin of intergalactic magnetic fields
• Constraints on Large-Scale Magnetic Fields in the Intergalactic Medium Using Cross-Correlation Methods
• F-GAMMA: Multi-frequency radio monitoring of Fermi blazars. The 2.64 to 43 GHz Effelsberg light curves from 2007-2015
• Constraining Magnetic Fields in the Circumgalactic Medium
• Cosmic Magnetism in Centimeter and Meter Wavelength Radio Astronomy
• S-PASS/ATCA: a window on the magnetic universe in the southern hemisphere
• A compiled catalog of rotation measures of radio point sources
• FIRST winged radio galaxies with X and Z symmetry
• Revealing HI gas in emission and absorption on pc to kpc scales in a galaxy at z ~ 0.017
• Role of intervening Mg II absorbers on the rotation measure and fractional polarisation of the background quasars
• The rotation measures of high luminosity sources as seen from the NVSS
• Evidence for strong intracluster magnetic fields in the early Universe
• Discovery of a new supernova remnant G21.8-3.0
• The FAST Galactic Plane Pulsar Snapshot survey: IV. Discovery of five fast radio bursts
• Intergalactic medium rotation measure of primordial magnetic fields
• The Huge Magnetic Toroids in the Milky Way Halo
• Polarised radiative transfer, rotation measure fluctuations and large-scale magnetic fields
• Statistical distribution of HI 21cm intervening absorbers as potential cosmic acceleration probes
• Dim cores of radio-bright AGN jets: VLBI and Gaia astrometry pinpoint different parsec-scale features
• Effects of Depolarizing Intervening Galaxies on Background Radio Emission I. Global Disk Magnetic Field
• A lower bound on the number of cosmic ray events required to measure source catalogue correlations