SIMBAD references

2017MNRAS.468.4246B - Mon. Not. R. Astron. Soc., 468, 4246-4253 (2017/July-2)

Limiting magnetic fields in the cosmic web with diffuse radio emission.

BROWN S., VERNSTROM T., CARRETTI E., DOLAG K., GAENSLER B.M., STAVELEY-SMITH L., BERNARDI G., HAVERKORN M., KESTEVEN M. and POPPI S.

Abstract (from CDS):

We set limits on the presence of the synchrotron cosmic web through the cross-correlation of the 2.3 GHz S-PASS survey with a model of the local cosmic web derived from constrained magnetohydrodynamic (MHD) simulations. The MHD simulation assumes cosmologically seeded magnetic fields amplified during large-scale structure formation and a population of relativistic electrons/positrons from proton-proton collisions within the intergalactic medium. We set a model-dependent 3σ upper limit on the synchrotron surface brightness of 0.16 mJy arcmin–2 at 2.3 GHz in filaments. Extrapolating from magnetic field maps created from the simulation, we infer an upper limit (density-weighted) magnetic field of 0.03 (0.13) µG in filaments at the current epoch and a limit on the primordial magnetic field (PMF) of BPMF < 1.0 nG.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): magnetic fields - plasmas - galaxies: clusters: intracluster medium - intergalactic medium - large-scale structure of Universe - radio continuum: general - radio continuum: general

Simbad objects: 8

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2019.12.12-04:38:03

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