2020ApJ...898L..48X

Query : 2020ApJ...898L..48X

2020ApJ...898L..48X - Astrophys. J., 898, L48-L48 (2020/August-1)

Probing the intergalactic turbulence with fast radio bursts.

XU S. and ZHANG B.

Abstract (from CDS):

The turbulence in the diffuse intergalactic medium (IGM) plays an important role in various astrophysical processes across cosmic time, but it is very challenging to constrain its statistical properties both observationally and numerically. Via the statistical analysis of turbulence along different sight lines toward a population of fast radio bursts (FRBs), we demonstrate that FRBs provide a unique tool to probe the intergalactic turbulence. We measure the structure function (SF) of dispersion measures (DMs) of FRBs to study the multiscale electron density fluctuations induced by the intergalactic turbulence. The SF has a large amplitude and a Kolmogorov power-law scaling with angular separations, showing large and correlated DM fluctuations over a range of length scales. Given that the DMs of FRBs are IGM dominated, our result tentatively suggests that the intergalactic turbulence has a Kolmogorov power spectrum and an outer scale on the order of 100 Mpc.

Abstract Copyright: © 2020. The Author(s). Published by the American Astronomical Society.

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

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 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0

Query : 2020ApJ...898L..48X

Basic data :
ACO 780 -- Cluster of Galaxies
Other object types: otypes_help 		ClG (2014MNRAS,ACO,...), gLe (2016MNRAS), X (1H)
ICRS coord. (ep=J2000) : 		09 18 30.0 -12 15 42 [ 150000 150000 90 ] E 1989ApJS...70....1A
FK4 coord. (ep=B1950 eq=1950) : 		09 16 05.6 -12 03 02 [ 150000 150000 90 ]
Gal coord. (ep=J2000) : 		243.1375 +25.0686 [ 150000 150000 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 15241 [~] / z(~) 0.052200 [~] / cz 15649.17 [~]
   D 1987ApJS...63..543S
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 34 		Display criteria :

Identifiers (5) :
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ACO 780 1H 0917-121 NAME Hydra A Cluster
BAX 139.6265-12.2611 NAME Hya A Cluster

References (469 between 1850 and 2026) (Total 469)
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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Collections of Measurements Description of Measurements

Velocities : 2   

   

Observing logs
XMM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : ACO 780

Link by name to the catalogue in VizieR :

ACO 780

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