SIMBAD references

2014MNRAS.441.1537K - Mon. Not. R. Astron. Soc., 441, 1537-1544 (2014/June-3)

Scattering of emission lines in galaxy cluster cores: measuring electron temperature.

KHEDEKAR S., CHURAZOV E., SAZONOV S., SUNYAEV R. and EMSELLEM E.

Abstract (from CDS):

The central galaxies of some clusters can be strong emitters in the Lyα and Hα lines. This emission may arise either from the cool/warm gas located in the cool core of the cluster or from the bright AGN within the central galaxy. The luminosities of such lines can be as high as 1042-1044 erg/s. This emission originating from the core of the cluster will get Thomson scattered by hot electrons of the intra-cluster medium with an optical depth ∼ 0.01 giving rise to very broad (Δλ/λ ∼ 15 per cent) features in the scattered spectrum. We discuss the possibility of measuring the electron density and temperature using information on the flux and width of the highly broadened line features.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): techniques: photometric - techniques: spectroscopic - telescopes - galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: nuclei

Simbad objects: 12

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