2011A&A...535A..82V

Query : 2011A&A...535A..82V

2011A&A...535A..82V - Astronomy and Astrophysics, volume 535A, 82-82 (2011/11-1)

Discovery of diffuse radio emission in the galaxy cluster A1689.

VACCA V., GOVONI F., MURGIA M., GIOVANNINI G., FERETTI L., TUGNOLI M., VERHEIJEN M.A. and TAYLOR G.B.

Abstract (from CDS):

The aim of this work is to investigate the possible presence of extended diffuse synchrotron radio emission associated with the intracluster medium of the complex galaxy cluster A1689. The radio continuum emission of A1689 has been investigated by analyzing archival observations at 1.2 and 1.4GHz obtained with the Very Large Array in different configurations. We report the detection of an extended, diffuse, low-surface brightness radio emission located in the central region of A1689. The surface brightness profile of the diffuse emission at 1.2GHz indicates a central radio brightness of ≃1.7µJy/arcsec2 and the 3σ radio isophothes reveal the largest linear size to be 730kpc. Given its central location, the low-level surface brightness, and the comparatively large extension, we classify the diffuse cluster-wide emission in A1689 as a small radio halo.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: A1689 - magnetic fields - large-scale structure of Universe

Simbad objects: 42

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Number of rows : 42
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 812 0
2 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 502 0
3 AzV 111 Em* 00 51 55.8831704592 -72 32 03.591345408   13.8 13.933   13.963 B0II 14 0
4 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 295 0
5 6C 021252+733537 BLL 02 17 30.81335327 +73 49 32.6217355     19.00 18.97   ~ 455 1
6 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 396 0
7 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 566 0
8 ACO 523 ClG 04 59 01 +08 46.5           ~ 55 0
9 ACO 545 ClG 05 32 24.4152 -11 32 35.080           ~ 97 0
10 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 963 1
11 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 463 0
12 B3 0714+378 Rad 07 17 36.6 +37 45 01           ~ 170 2
13 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 253 0
14 ACO 754 ClG 09 09 08.4 -09 39 58           ~ 666 1
15 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 295 0
16 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 153 0
17 ACO 1213 ClG 11 16 26.98 +29 16 23.9           ~ 151 0
18 ACO 1351 ClG 11 42 24.7795 +58 32 05.558           ~ 79 0
19 QSO J1246-0730 QSO 12 46 04.23211565 -07 30 46.5746985   17.6 18.0 18.2   ~ 186 1
20 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4798 2
21 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1125 0
22 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 102 0
23 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4341 2
24 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 251 2
25 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 314 1
26 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 548 0
27 QSO B1351-018 QSO 13 54 06.89532721 -02 06 03.1904962   20.62 19.91 19.277   ~ 159 1
28 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 688 1
29 ACO 1914 ClG 14 26 03.32 +37 49 58.7           ~ 314 0
30 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 130 0
31 ACO 2024 ClG 15 05 29 +47 07.4           ~ 6 0
32 ACO 2029 ClG 15 10 56.2 +05 44 42           ~ 943 0
33 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 562 0
34 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 809 1
35 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 359 0
36 ACO 2256 ClG 17 03 09.4 +78 39 36           ~ 885 1
37 NAME Oph Cluster ClG 17 12 24.7 -23 21 01           ~ 272 0
38 ACO 2254 ClG 17 17 45.90 +19 40 22.8           ~ 69 0
39 ACO 2294 ClG 17 24 10.1 +85 53 09           ~ 63 0
40 ACO 2319 ClG 19 20 45.3 +43 57 43           ~ 461 1
41 ACT-CL J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 59 0
42 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 688 2

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