2014MNRAS.441.1537K

Query : 2014MNRAS.441.1537K

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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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 - 2026 		#notes
1 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
2 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
3 PKS 0745-19 rG 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 422 1
4 ClG 0745-1910 ClG 07 47 32.4 -19 18 23           ~ 378 0
5 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
6 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
7 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
8 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
9 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
10 LEDA 1900245 Bla 15 32 53.780 +30 20 59.41   19.1   15.7 17.819 ~ 155 1
11 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
12 ACT-CL J2344.7-4243 ClG 23 44 43.9 -42 43 11           ~ 229 0

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