2016A&A...595A.116M

Query : 2016A&A...595A.116M

2016A&A...595A.116M - Astronomy and Astrophysics, volume 595A116-116 (2016/11-1)

ATCA observations of the MACS-Planck Radio Halo Cluster Project. I. New detection of a radio halo in PLCK G285.0-23.7.

MARTINEZ AVILES G., FERRARI C., JOHNSTON-HOLLITT M., PRATLEY L., MACARIO G., VENTURI T., BRUNETTI G., CASSANO R., DALLACASA D., INTEMA H.T., GIACINTUCCI S., HURIER G., AGHANIM N., DOUSPIS M. and LANGER M.

Abstract (from CDS):

Aims. We investigate the possible presence of diffuse radio emission in the intermediate redshift, massive cluster PLCK G285.0-23.7 (z=0.39, M500=8.39x1014M☉).
Methods. Our 16 cm-band ATCA observations of PLCK G285.0-23.7 allow us to reach a rms noise level of ∼11µJy/beam on the wide-band (1.1-3.1GHz), full-resolution (∼5 arcsec) image of the cluster, making it one of the deepest ATCA images yet published. We also re-image visibilities at lower resolution in order to achieve a better sensitivity to low-surface-brightness extended radio sources.
Results. We detect one of the lowest luminosity radio halos known at z>0.35, characterised by a slight offset from the well-studied 1.4GHz radio power vs. cluster mass correlation. Similarly to most known radio-loud clusters (i.e. those hosting diffuse non-thermal sources), PLCK G285.0-23.7 has a disturbed dynamical state. Our analysis reveals a similarly elongated X-ray and radio morphology. While the size of the radio halo in PLCK G285.0-23.7 is smaller than lower redshift radio-loud clusters in the same mass range, it shows a similar correlation with the cluster virial radius, as expected in the framework of hierarchical structure formation.

Abstract Copyright: © ESO, 2016

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: PLCK G285.0-23.7 - radio continuum: galaxies - galaxies: clusters: intracluster medium - radiation mechanisms: non-thermal

Simbad objects: 44

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Number of rows : 44
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 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
3 ACT-CL J0102-4915 ClG 01 02 52.50 -49 14 58.0           ~ 296 0
4 ZwCl 0104+5350 ClG 01 07 43.2 +54 08 43           ~ 35 0
5 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
6 PLCKESZ G171.9-40.7 ClG 03 12 55 +08 22.8           ~ 58 0
7 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 279 0
8 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
9 ACO 545 ClG 05 32 24.4152 -11 32 35.080           ~ 102 0
10 ACT-CL J0553.4-3342 ClG 05 53 27.200 -33 42 53.02           ~ 74 0
11 PKS 0606-796 rG 06 03 06.14926 -79 34 50.4248     20     ~ 17 1
12 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
13 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 511 0
14 SMACS J0723.3-7327 ClG 07 23 13.3 -73 27 25           ~ 252 0
15 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
16 ACO 3411 ClG 08 41 47.7 -17 28 46           ~ 81 0
17 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
18 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
19 ACO 746 ClG 09 09 34.7638 +51 32 56.134           ~ 55 0
20 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
21 ZwCl 0947+1723 ClG 09 49 51.8 +17 07 05           ~ 92 0
22 PKS 1036-69 rG 10 38 28.560 -70 03 08.76           ~ 22 1
23 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
24 ACO 1351 ClG 11 42 24.7795 +58 32 05.558           ~ 90 0
25 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 546 0
26 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
27 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
28 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 266 2
29 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
30 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 140 0
31 ACO 2034 ClG 15 10 03.9 +33 30 57           ~ 248 1
32 2MASX J15150305-1521537 ClG 15 14.9 -15 23           ~ 57 0
33 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
34 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
35 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
36 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
37 ACO 2254 ClG 17 17 45.90 +19 40 22.8           ~ 79 0
38 ACO 2294 ClG 17 24 10.1 +85 53 09           ~ 69 0
39 MCS J1752.0+4440 ClG 17 52 02.2 +44 40 38           ~ 68 0
40 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
41 CIZA J1938.3+5409 ClG 19 38 18.6 +54 09 33           ~ 42 0
42 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2
43 ACT-CL J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 63 0
44 ACO 3888 ClG 22 34 26.3 -37 44 29           ~ 151 1

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