SIMBAD references

2015MNRAS.451.4021S - Mon. Not. R. Astron. Soc., 451, 4021-4028 (2015/August-3)

KAT-7 detection of radio halo emission in the Triangulum Australis galaxy cluster.

SCAIFE A.M.M., OOZEER N., DE GASPERIN F., BRUGGEN M., TASSE C. and MAGNUS L.

Abstract (from CDS):

We report the presence of high significance diffuse radio emission from the Triangulum Australis cluster using observations made with the KAT-7 telescope and propose that this emission is a giant radio halo. We compare the radio power from this proposed halo with X-ray and SZ (Sunyaev-Zel'dovich) measurements and demonstrate that it is consistent with the established scaling relations for cluster haloes. By combining the X-ray and SZ data we calculate the ratio of non-thermal to thermal electron pressure within Triangulum Australis to be X = 0.658±0.054. We use this ratio to constrain the maximum magnetic field strength within the halo region to be Bmax, halo = 33.08µG and compare this with the minimum field strength from equipartition of Bmin, halo = 0.77(1 + k)2/7µG to place limits on the range of allowed magnetic field strength within this cluster. We compare these values to those for more well-studied systems and discuss these results in the context of equipartition of non-thermal energy densities within clusters of galaxies.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): galaxies: clusters: individual: Triangulum Australis - galaxies: clusters: intracluster medium

Nomenclature: Table 1: [SOD2015] NN (Nos 1-18).

Simbad objects: 31

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2019.12.10-14:39:15

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