2001A&A...378..777D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.16CEST15:41:45

2001A&A...378..777D - Astronomy and Astrophysics, volume 378, 777-786 (2001/11-2)

Correlation of the magnetic field and the intra-cluster gas density in galaxy clusters.

DOLAG K., SCHINDLER S., GOVONI F. and FERETTI L.

Abstract (from CDS):

We present a correlation between X-ray surface brightness and Faraday rotation measure in galaxy clusters, both, from radio and X-ray observations as well as from modeling of the intra-cluster medium. The observed correlation rules out a magnetic field of constant strength throughout the cluster. Cosmological, magneto-hydrodynamic simulations of galaxy clusters are used to show that for a magnetic field of cosmic origin this correlation is expected and excellently reproduces the observations showing that the rms scatter of the Faraday rotation increases linearly with the X-ray surface brightness. From the correlation between the observable quantities, rotation measure and X-ray surface brightness, we infer a relation between the physical quantities: magnetic field and gas density. For the best available observations, those of A119, we find B ∝ne0.9.

Abstract Copyright:

Journal keyword(s): magnetic fields - galaxies: clusters: general

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 4C -01.04 GiC 00 56 02.697 -01 20 03.77   16.4       ~ 91 0
2 ACO 119 ClG 00 56 16.8 -01 15 00           ~ 517 2
3 MRC 0053-015 Rad 00 56 24.0 -01 17 27           ~ 4 0
4 UGC 595 AGN 00 57 34.920 -01 23 27.89   14.07 15.10     ~ 230 1
5 ACO 514 ClG 04 47 40.0 -20 25 44           ~ 136 0
6 2MASX J04481046-2024574 GiC 04 48 10.4468626772 -20 24 57.104928869   16.99   15.38   ~ 17 0
7 PKS 0446-206 rG 04 48 30.588 -20 32 13.85   16.86   15.36   ~ 30 1
8 3C 129 rG 04 49 09.064 +45 00 39.40   19       ~ 243 2
9 LEDA 16124 G 04 50 06.685 +45 03 05.74   19       ~ 62 1
10 NGC 4869 rG 12 59 23.331 +27 54 41.81 15.03 14.9 13.52 13.292 12.536 ~ 259 0
11 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4208 2
12 3C 295 Sy2 14 11 20.467 +52 12 09.52   22.34 20.80 18.54   ~ 896 5

    Equat.    Gal    SGal    Ecl

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2020.07.16-15:41:45

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