2023MNRAS.526.5278H

Query : 2023MNRAS.526.5278H

2023MNRAS.526.5278H - Mon. Not. R. Astron. Soc., 526, 5278-5291 (2023/December-3)

Radio multifrequency observations of Abell 781 with the WSRT.

HUGO B., BERNARDI G., SMIRNOV O.M., DALLACASA D., VENTURI T., MURGIA M. and PIZZO R.F.

Abstract (from CDS):

The Main galaxy cluster in the Abell 781 system is undergoing a significant merger and accretion process with peripheral emission to the north and south-eastern flanks of the merging structure. Here we present a full polarimetric study of this field, using radio interferometric data taken at 21 and 92 cm with the Westerbork Synthesis Radio Telescope (WSRT), to a sensitivity better than any 21 cm (L band) observation to date. We detect evidence of extended low-level emission of 1.9 mJy associated with the Main cluster at 21 cm, although this detection necessitates further follow-up by modern instruments due to the limited resolution of the WSRT. Our polarimetric study indicates that, most likely, the peripheral emission associated with this cluster is not a radio relic.

Abstract Copyright: © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): techniques: polarimetric - galaxies: clusters: general - galaxies: evolution - galaxies: haloes - radio continuum: galaxies

Simbad objects: 27

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Number of rows : 27
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 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
2 ICRF J052109.8+163822 Sy1 05 21 09.88596258 +16 38 22.0515459   19.37 18.84 18.480   ~ 910 1
3 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1573 1
4 4C 56.16 rG 07 49 48.077 +55 54 19.45           ~ 176 1
5 QSO B0839+187 Bla 08 42 05.0940565824 +18 35 40.988568300   16.63 16.36 16.56   ~ 196 2
6 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
7 [VGD2011] S1 Rad 09 20 01.6 +30 34 06           ~ 2 0
8 [VGD2011] S3 Rad 09 20 07.9 +30 29 51           ~ 2 0
9 [VGD2011] S2 Rad 09 20 08.3 +30 21 15           ~ 2 0
10 SDSS J092010.56+303326.0 G 09 20 10.566 +30 33 26.05       19.555   ~ 4 0
11 SDSS J092010.72+303426.0 G 09 20 10.7215987080 +30 34 26.111353080       18.858   ~ 4 0
12 SDSS J092010.92+303354.0 G 09 20 10.924 +30 33 54.01       18.399   ~ 4 0
13 SHELS 140.0476116+30.4632337 GiC 09 20 11.414 +30 27 47.52       18.714   ~ 5 0
14 [VGD2011] S4 Rad 09 20 14.1 +30 29 01           ~ 2 0
15 SHELS 140.0791521+30.4965539 GiP 09 20 18.969 +30 29 46.99       19.274   ~ 5 0
16 [VGD2011] S5 Rad 09 20 22.1 +30 32 25           ~ 2 0
17 SDSS J092022.21+303102.3 G 09 20 22.212 +30 31 02.32       19.033   ~ 4 0
18 [VGD2011] S6 Rad 09 20 22.7 +30 29 47           ~ 2 0
19 SDSS J092025.17+303131.6 G 09 20 25.173 +30 31 31.66       18.159   ~ 6 0
20 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 167 0
21 [VGD2011] Relic Rad 09 20 31.2 +30 27 35           ~ 2 0
22 SDSS J092035.88+302905.0 G 09 20 35.883 +30 29 05.04       18.052   ~ 5 0
23 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
24 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
25 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
26 ICRF J143844.7+621154 Sy1 14 38 44.7834430248 +62 11 54.412540044   19.48 19.07     ~ 75 1
27 CIZA J2242.8+5301 ClG 22 42 53.0 +53 01 05           ~ 228 0

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