2009A&A...494..429B

Query : 2009A&A...494..429B

2009A&A...494..429B - Astronomy and Astrophysics, volume 494, 429-442 (2009/2-1)

Double relics in Abell 2345 and Abell 1240. Spectral index and polarization analysis.

BONAFEDE A., GIOVANNINI G., FERETTI L., GOVONI F. and MURGIA M.

Abstract (from CDS):

The aim of the present work is to study the radio properties of double relics in Abell 1240 and Abell 2345 in the framework of double relic formation models. We present new Very Large Array observations at 20 and 90cm for these two clusters. We performed spectral index and polarization analysis and compared our results with expectations from theoretical models. The presence of double relics in these two cluster is confirmed by these new observations. Double relics in Abell 1240 show radio morphology, spectral index, and polarization values in agreement with ``outgoing merger shocks'' models. One of the relics of Abell 2345 shows a peculiar morphology and spectral index profile, which are difficult to reconcile with present scenarios. We suggest a possible origin for this peculiar relic.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: Abell 1240 - galaxies: clusters: individual: Abell 2345 - radiation mechanisms: non-thermal - polarization - magnetic fields

Nomenclature: Table 1: [BGF2009] ACO 2345-N (Nos 1-2), [BGF2009] ACO 1240-N (Nos 1-2). Fig. 1: [BGF2009] ACO 2345-2 A (Nos A-F), [BGF2009] ACO 2345-1 A (No. G). Fig. 4: [BGF2009] ACO 2345 XN (Nos X1-X3). Fig. 6: [BGF2009] ACO 1240-1 A (Nos A to C). Text: [BGF2009] J21263466-1207214.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 29

Full paper

View the references in ADS

Number of rows : 29

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	ACO 2744	ClG	00 14 20.03	-30 23 17.8					~	708	0
2	3C 48	QSO	01 37 41.2996631208	+33 09 35.080388820	16.62	16.20			~	2731	2
3	ACO 521	ClG	04 54 08.6	-10 14 39					~	235	0
4	ACO 3367	ClG	05 49 21	-24 28.1					~	30	0
5	ACO 3376	ClG	06 01 25.000	-39 59 51.00					~	294	0
6	NAME 0917+75 Relic	rG	09 22 11.400	+74 59 31.00					~	15	0
7	Rood 27	ClG	09 25.7	+74 31					~	9	0
8	ACO 786	ClG	09 28 04.9	+74 46 58					~	43	0
9	[BGF2009] ACO 1240-1	Rad	11 23 25.00	+43 10 30.0					~	5	0
10	ACO 1240	ClG	11 23 37.7	+43 03 28					~	93	0
11	[BGF2009] ACO 1240-2	Rad	11 23 50.00	+43 00 20.0					~	5	0
12	EQ J1143+2002	Rad	11 43 02.98	+20 02 40.3					~	5	0
13	ACO 1367	ClG	11 44 44.6	+19 41 59					~	1054	1
14	4C 31.38	Sy2	11 56 18.7420683840	+31 28 04.676598588	19.33	18.96			~	136	1
15	NAME Coma Relic	Rad	12 55	+27.2					~	56	0
16	ACO 1656	ClG	12 59 48.7	+27 58 50					~	4629	2
17	BAX 199.3086-25.5133	ClG	13 14 31.5049	-25 15 56.602					~	99	0
18	3C 286	Sy1	13 31 08.2883506368	+30 30 32.960091564	17.51	17.25			~	4189	2
19	ACO S 753	ClG	14 03 35.9	-33 59 16					~	83	1
20	NGC 5419	BiC	14 03 38.7225244848	-33 58 41.881842120	11.77	11.33	10.21	14.44	~	186	2
21	ACO 2256	ClG	17 03 43.5	+78 43 03					~	869	1
22	ACO 2255	ClG	17 12 50.04	+64 03 10.6					~	550	0
23	ACO 3667	ClG	20 12 33.68	-56 50 26.3					~	607	1
24	QSO J2123+0535	QSO	21 23 44.51739933	+05 35 22.0930238	18.3	20.40	19.86		~	276	1
25	2MASX J21263466-1207214	G	21 26 34.6496460408	-12 07 21.931472028					~	2	0
26	[BGF2009] ACO 2345-1	Rad	21 26 43.00	-12 07 50.0					~	4	0
27	ACO 2345	ClG	21 27 09.80	-12 09 58.8					~	126	1
28	[BGF2009] ACO 2345-2	Rad	21 27 36.00	-12 11 25.0					~	4	0
29	ICRF J213750.0-204231	Sy1	21 37 50.00785656	-20 42 31.6728477	20.400	19.4	19.286		~	90	1

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