2023ApJ...946L..18P

Query : 2023ApJ...946L..18P

2023ApJ...946L..18P - Astrophys. J., 946, L18 (2023/March-3)

A New Limit on Intergalactic Magnetic Fields on Subkiloparsec Scales from Fast Radio Bursts.

PADMANABHAN H. and LOEB A.

Abstract (from CDS):

We use the measured scattering timescales of fast radio bursts (FRBs) from the CHIME catalog to derive an upper limit on the magnetic field on subkiloparsec scales in the intergalactic medium (IGM). A nonmagnetized, photoionized IGM is insufficient to explain the turbulent scattering at all redshifts, with a warm-hot component being marginally consistent with the data at z ∼ 1. Accounting for the lower envelope of the temporal smearing distribution with a nonzero magnetic field leads to upper limits B < 10-30 nG on scales of 0.07-0.20 kpc in the IGM at z ∼ 1-2. Our work introduces a novel technique to constrain small-scale magnetic fields in the IGM, in a regime unexplored by the rotation and dispersion measures of FRBs.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Radio transient sources - Intergalactic medium - Magnetic fields

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Laniakea Supercluster SCG ~ ~           ~ 61 0

Query : 2023ApJ...946L..18P

Basic data :
NAME Laniakea Supercluster -- Supercluster of Galaxies
Other object types: otypes_help 		SCG (2014Natur)
ICRS coord. (ep=J2000) : 		No Coord.

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 11 		Display criteria :

Identifiers (1) :
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NAME Laniakea Supercluster

References (61 between 1850 and 2026) (Total 61)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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