2014MNRAS.445..330H

Query : 2014MNRAS.445..330H

2014MNRAS.445..330H - Mon. Not. R. Astron. Soc., 445, 330-346 (2014/November-3)

The First Murchison Widefield Array low-frequency radio observations of cluster scale non-thermal emission: the case of Abell 3667.

HINDSON L., JOHNSTON-HOLLITT M., HURLEY-WALKER N., BUCKLEY K., MORGAN J., CARRETTI E., DWARAKANATH K.S., BELL M., BERNARDI G., BHAT N.D.R., BOWMAN J.D., BRIGGS F., CAPPALLO R.J., COREY B.E., DESHPANDE A.A., EMRICH D., EWALL-WICE A., FENG L., GAENSLER B.M., GOEKE R., GREENHILL L.J., HAZELTON B.J., JACOBS D., KAPLAN D.L., KASPER J.C., KRATZENBERG E., KUDRYAVTSEVA N., LENC E., LONSDALE C.J., LYNCH M.J., McWHIRTER S.R., McKINLEY B., MITCHELL D.A., MORALES M.F., MORGAN E., OBEROI D., ORD S.M., PINDOR B., PRABU T., PROCOPIO P., OFFRINGA A.R., RIDING J., ROGERS A.E.E., ROSHI A., UDAYA SHANKAR N., SRIVANI K.S., SUBRAHMANYAN R., TINGAY S.J., WATERSON M., WAYTH R.B., WEBSTER R.L., WHITNEY A.R., WILLIAMS A. and WILLIAMS C.L.

Abstract (from CDS):

We present the first Murchison Widefield Array observations of the well-known cluster of galaxies Abell 3667 (A3667) between 105 and 241MHz. A3667 is one of the best known examples of a galaxy cluster hosting a double radio relic and has been reported to contain a faint radio halo and bridge. The origin of radio haloes, relics and bridges is still unclear, however galaxy cluster merger seems to be an important factor. We clearly detect the north-west (NW) and south-east radio relics in A3667 and find an integrated flux density at 149MHz of 28.1±1.7 and 2.4±0.1Jy, respectively, with an average spectral index, between 120 and 1400MHz, of -0.9±0.1 for both relics. We find evidence of a spatial variation in the spectral index across the NW relic steepening towards the centre of the cluster, which indicates an ageing electron population. These properties are consistent with higher frequency observations. We detect emission that could be associated with a radio halo and bridge. However, due to the presence of poorly sampled large-scale Galactic emission and blended point sources we are unable to verify the exact nature of these features.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): galaxies: clusters: individual: A3667 - radio continuum: galaxies

Simbad objects: 27

goto Full paper

goto View the references in ADS

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 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 279 0
3 [KDB2012] Abell 3376 W-relic Rad 06 00 10 -40 02.0           ~ 4 0
4 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
5 [KDB2012] Abell 3376 E-relic Rad 06 02 45 -39 57.0           ~ 4 0
6 ClG J0603.3+4214 ClG 06 03.3 +42 14           ~ 141 0
7 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 167 0
8 [BGF2009] ACO 1240-1 Rad 11 23 25.00 +43 10 30.0           ~ 6 0
9 [BGF2009] ACO 1240-2 Rad 11 23 50.00 +43 00 20.0           ~ 6 0
10 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
11 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
12 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 118 0
13 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
14 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
15 PMN J2004-5534 Rad 20 04 01.0 -55 34 49           ~ 6 1
16 [CBS2013] 5 Rad 20 09 25.3 -56 33 27           ~ 3 0
17 PMN J2011-5644 rG 20 11 27.5061252528 -56 44 07.084747536   16.56   15.16   ~ 26 1
18 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
19 SUMSS J201330-570552 Rad 20 13 30.19 -57 05 52.4           ~ 3 0
20 PMN J2014-5701 Rad 20 14 01.6 -57 01 10           ~ 5 0
21 PMN J2017-5747 Rad 20 17 48.09 -57 47 13.6           ~ 6 1
22 LEDA 64440 Sy2 20 18 01.2940411824 -55 39 31.590064800   15.5       ~ 91 0
23 RX J2024.3-5723 QSO 20 24 20.5420678872 -57 23 43.549295928     18.5     ~ 37 1
24 [BGF2009] ACO 2345-1 Rad 21 26 43.00 -12 07 50.0           ~ 5 0
25 [BGF2009] ACO 2345-2 Rad 21 27 36.00 -12 11 25.0           ~ 5 0
26 3C 444 rG 22 14 25.752 -17 01 36.29     17.8     ~ 171 1
27 CIZA J2242.8+5301 ClG 22 42 53.0 +53 01 05           ~ 228 0

To bookmark this query, right click on this link: simbad:objects in 2014MNRAS.445..330H and select 'bookmark this link' or equivalent in the popup menu