2012MNRAS.421L.112B

Query : 2012MNRAS.421L.112B

2012MNRAS.421L.112B - Mon. Not. R. Astron. Soc., 421, L112-L116 (2012/March-3)

A Sunyaev-Zel'dovich take on cluster radio haloes - I. Global scaling and bi-modality using Planck data.

BASU K.

Abstract (from CDS):

Giant radio haloes in galaxy clusters are the primary evidence for the existence of relativistic particles (cosmic rays) and magnetic fields over Mpc scales. Observational tests for the different theoretical models explaining their powering mechanism have so far been obtained through X-ray selection of clusters, e.g. by comparing cluster X-ray luminosities with radio halo power. Here we present the first global scaling relations between radio halo power and integrated Sunyaev-Zel'dovich (SZ) effect measurements, using the Planck all-sky cluster catalogue and published radio data. The correlation agrees well with previous scaling measurements based on X-ray data and offers a more direct probe into the mass dependence inside radio haloes. However, we find no strong indication for a bi-modal cluster population split between radio halo and radio-quiet objects. We discuss the possible causes for this apparent lack of bi-modality and compare the observed slope of the radio-SZ correlation with competing theoretical models of radio halo origin.

Abstract Copyright: 2012 The Author Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): radiation mechanisms: non-thermal - radiation mechanisms: thermal - galaxies: clusters: intracluster medium - radio continuum: general

Simbad objects: 23

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Number of rows : 23
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 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
3 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
4 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
5 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
6 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
7 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
8 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
9 ACO 3444 ClG 10 23 53.1540 -27 15 07.840           ~ 97 0
10 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
11 ACO 1351 ClG 11 42 24.7795 +58 32 05.558           ~ 90 0
12 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
13 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 118 0
14 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
15 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 140 0
16 ACO S 780 ClG 14 59 29.1 -18 10 45           ~ 93 0
17 ACO 2034 ClG 15 10 03.9 +33 30 57           ~ 248 1
18 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
19 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
20 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
21 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
22 ACT-CL J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 63 0
23 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2

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