2016MNRAS.459.2525S

Query : 2016MNRAS.459.2525S

2016MNRAS.459.2525S - Mon. Not. R. Astron. Soc., 459, 2525-2538 (2016/July-1)

The ATCA REXCESS Diffuse Emission Survey (ARDES) - I. Detection of a giant radio halo and a likely radio relic.

SHAKOURI S., JOHNSTON-HOLLITT M. and PRATT G.W.

Abstract (from CDS):

We present the results of the radio halo survey of 16 REXCESS southern clusters up to a redshift of 0.2 with the Australia Telescope Compact Array (ATCA) at 1.4 and 2.1 GHz. This cluster sample called the ATCA REXCESS Diffuse Emission Survey (ARDES) includes clusters in a wide range of X-ray luminosities and is morphologically unbiased. We find two diffuse radio sources in the clusters RXCJ2234.5-3744 (Abell 3888) and RXCJ0225.1-2928. The diffuse radio emission in RXCJ2234.5-3744 is a giant radio halo and the diffuse emission in RXCJ0225.1-2928 is a peculiar radio relic candidate. The radio halo has a spectral index of α=-1.48 ± 0.14 and the K-corrected P_1.4 is 1.9 ± 0.2 x 10²⁴ W Hz^–1. The properties of the detected halo are consistent with both the current P_1.4-L_X and P_1.4-Y_SZ correlations. The putative radio relic is located approximately 1 Mpc from the cluster in a filament and has a physical extent of 346 ± 20 kpc and a power of P_1.4=3.3 ± 0.8 x 10²³ W Hz^–1, which places it in the lower power region of currently known relics.

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: RXC2234.5-3744 - galaxies: clusters: individual: RXCJ0225.1-2928 - galaxies: clusters: individual: RXCJ0225.1-2928

Simbad objects: 35

Full paper

View the references in ADS

Number of rows : 35

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2024	#notes
1	ACO 2721	ClG	00 06 02.1	-34 43 32				~	92	0
2	ACO 13	ClG	00 13 38.5	-19 30 19				~	100	1
3	ACO 22	ClG	00 20 41.4	-25 42 39				~	103	0
4	ACO 85	ClG	00 41 36.21	-09 19 30.4				~	909	0
5	ACO S 84	ClG	00 49 23.2	-29 31 33				~	83	0
6	ACO 133	ClG	01 02 41.5	-21 52 53				~	368	1
7	ACO 2941	ClG	01 45 03.60	-53 01 23.4				~	53	0
8	ACO 2948	ClG	01 52 13.66	-32 42 13.0				~	4	0
9	ACO 2984	ClG	02 11 25.1	-40 17 29				~	51	0
10	BAX 036.2925-29.4731	ClG	02 25 08.6	-29 28 34				~	33	0
11	ACO S 258	ClG	02 25 44.44	-29 36 57.5				~	9	0
12	LEDA 132964	G	02 25 44.4512627112	-29 36 57.269564244	15.819		14.558	~	13	0
13	ACO S 384	ClG	03 45 45.0	-41 10 42				~	36	0
14	ACT-CL J0520.7-1328	ClG	05 20 42.0	-13 28 49				~	34	0
15	ACO 3371	ClG	05 56 11	-18 18.6				~	2	0
16	MARD J061735.4-474656	ClG	06 16 51.4	-47 47 41				~	34	0
17	ACO 3404	ClG	06 45 29.50	-54 13 37.0				~	96	0
18	ClG 0657-56	ClG	06 58 29.6	-55 56 39				~	963	1
19	ACO 585	ClG	07 30 57	+40 50.7				~	16	0
20	ACO 700	ClG	08 45 59	+36 57.0				~	5	0
21	ACO S 700	ClG	12 36 41.8	-33 55 01				~	30	0
22	ACO 2256	ClG	17 03 09.4	+78 39 36				~	885	1
23	ACO 2255	ClG	17 12 50.04	+64 03 10.6				~	568	0
24	ICRF J193925.0-634245	Sy2	19 39 25.0245304992	-63 42 45.640373400	18.87	18.37	17.64	~	1225	1
25	ACO 3667	ClG	20 12 33.68	-56 50 26.3				~	627	1
26	ACT-CL J2014.8-2430	ClG	20 14 49.7	-24 30 30				~	83	0
27	ACO S 868	ClG	20 22 59.5	-20 56 40				~	32	1
28	ACO 3771	ClG	21 29 43.2	-50 48 34				~	44	0
29	ACO 3814	ClG	21 49 07.24	-30 42 06.4				~	56	0
30	ACO 3856	ClG	22 18 45.2	-38 53 57				~	79	2
31	ACO 3888	ClG	22 34 23.0	-37 43 29				~	138	1
32	APMUKS (BJ) B223130.34-375901.7	GiC	22 34 23.27	-37 43 30.7				~	2	0
33	2MASX J22342640-3744354	BiC	22 34 26.3528963952	-37 44 34.733155488	18.88		16.63	~	4	0
34	LARCS a3888r03-1420	GiC	22 34 26.37	-37 44 39.8	18.48		16.27	~	3	0
35	ACO 4038	ClG	23 47 31.1	-28 12 10				~	335	3

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