2024MNRAS.531.3357K

Query : 2024MNRAS.531.3357K

2024MNRAS.531.3357K - Mon. Not. R. Astron. Soc., 531, 3357-3372 (2024/July-1)

MeerKAT discovery of a double radio relic and odd radio circle: connecting cluster and galaxy merger shocks.

KORIBALSKI B.S., VERONICA A., DOLAG K., REIPRICH T.H., BRUGGEN M., HEYWOOD I., ANDERNACH H., DETTMAR R.-J., HOEFT M., ZHANG X., BULBUL E., GARREL C., JOZSA G.I.G. and ENGLISH J.

Abstract (from CDS):

We present the serendipitous discovery of (1) a large double radio relic associated with the galaxy cluster PSZ2 G277.93 + 12.34 and (2) a new odd radio circle, ORC J1027-4422, both found in the same deep MeerKAT 1.3 GHz wide-band radio continuum image. The angular separation of the two arc-shaped cluster relics is ∼16 arcmin or ∼2.6 Mpc for a cluster redshift of z ≈ 0.158. The thin southern relic, which shows several ridges/shocks including one possibly moving inwards, has a linear extent of ∼1.64 Mpc. In contrast, the northern relic is about twice as wide, twice as bright, but only has a largest linear size of ∼0.66 Mpc. Complementary SRG/eROSITA X-ray images reveal extended emission from hot intracluster gas between the two relics and around the narrow-angle tail (NAT) radio galaxy PMN J1033-4335 (z ≈ 0.153) located just east of the northern relic. The radio morphologies of the NAT galaxy and the northern relic, which are also detected with the Australian Square Kilometer Array Pathfinder (ASKAP) at 888 MHz, suggest both are moving in the same outward direction. The discovery of ORC J1027-4422 in a different part of the same MeerKAT image makes it the fourth known single ORC. It has a diameter of ∼90 arcsec corresponding to 400 kpc at a tentative redshift of z ≈ 0.3 and remains undetected in X-ray emission. Supported by simulations, we discuss similarities between outward moving galaxy and cluster merger shocks as the formation mechanisms for ORCs and radio relics, respectively.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): instrumentation: interferometers - galaxies: clusters: intracluster medium - intergalactic medium - radio continuum: galaxies - X-rays: galaxies: clusters

Simbad objects: 58

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Number of rows : 58
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 MCXC J0019.6+2517 ClG 00 19 39.1 +25 17 27           ~ 29 0
2 MCS J0025.4-1222 ClG 00 25 29.381 -12 22 37.06           ~ 151 0
3 ORC J0102-2450 Rad 01 02 24.50 -24 50 38.1           ~ 14 0
4 ACT-CL J0102-4915 ClG 01 02 52.50 -49 14 58.0           ~ 296 0
5 ACT-CL J0159.0-3413 ClG 01 59 00.3 -34 13 00           ~ 33 0
6 ACT-CL J0232.2-4421 ClG 02 32 18.69 -44 20 41.5           ~ 130 0
7 ACO 373 ClG 02 43 26 +27 59.7           ~ 8 0
8 NAME For A Cluster ClG 03 22 -37.2           ~ 12 0
9 ACO 3186 ClG 03 52 20.6 -74 00 11           ~ 60 0
10 ICRF J040820.3-654509 Sy2 04 08 20.37884 -65 45 09.0806     18.0     ~ 207 1
11 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 279 0
12 ACO S 520 ClG 05 16 37.40 -54 30 01.5           ~ 114 0
13 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
14 ACO 3365 ClG 05 48 12 -21 56.1           ~ 41 0
15 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
16 NSC J093929+404627 ClG 09 39 30.4 +40 47 10           ~ 18 0
17 VHS J102714.34-442255.9 G 10 27 14.346 -44 22 55.96           ~ 1 0
18 ORC J1027-4422 Rad 10 27 14.38 -44 22 56.7           ~ 4 0
19 CWISE J102714.47-442259.5 MIR 10 27 14.4747 -44 22 59.540           ~ 1 0
20 VHS J102714.50-442252.5 G 10 27 14.510 -44 22 52.57           ~ 1 0
21 NGC 3263 Sy1 10 29 13.396 -44 07 22.52   11.46   10.23   ~ 61 1
22 PSZ2 G277.93+12.34 C?G 10 32 16.1658 -43 39 57.689           ~ 6 0
23 2MASS J10322580-4344544 G 10 32 25.7993902593 -43 44 54.881490440           ~ 1 0
24 2MASS J10322819-4335299 G 10 32 28.1966108096 -43 35 29.943571659           ~ 1 0
25 2MASS J10322960-4338494 G 10 32 29.6092715984 -43 38 49.209912827           ~ 1 0
26 2MASS J10322999-4338153 G 10 32 29.9878941149 -43 38 15.438567036           ~ 1 0
27 WISEA J103236.43-434058.4 MIR 10 32 36.4343 -43 40 58.415           ~ 1 0
28 2MASS J10323674-4336260 G 10 32 36.7431380445 -43 36 26.120504462           ~ 1 0
29 2MASS J10324354-4340426 G 10 32 43.5428738756 -43 40 42.432321891           ~ 1 0
30 PMN J1033-4335 Rad 10 33 01.50 -43 35 52.5           ~ 3 1
31 2MASX J10330244-4335085 G 10 33 02.4595333838 -43 35 08.524361413           ~ 1 0
32 LEDA 547219 G 10 33 05.570 -43 34 11.57   18.51   16.80   ~ 2 0
33 6dFGS gJ103308.0-433625 G 10 33 07.9 -43 36 26   17.68   16.90   ~ 3 0
34 2MASS J10334526-4335420 G 10 33 45.2445369113 -43 35 42.084269919           ~ 1 0
35 ICRF J112009.1-250807 Sy1 11 20 09.1125558984 -25 08 07.543310640   17.26 17.07     ~ 54 1
36 ACO 1240 ClG 11 23 37.7 +43 03 28           ~ 113 0
37 ClG J1138+2754 ClG 11 38 11.0 +27 55 34           ~ 37 0
38 PLCKESZ G287.0+32.9 ClG 11 50 49.20 -28 04 36.5           ~ 100 0
39 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 118 0
40 ACO 1889 ClG 14 16 38.8 +30 44 08           ~ 23 0
41 ACO 1925 ClG 14 28 22.39 +56 46 43.7           ~ 58 0
42 V* BR Cir HXB 15 20 40.8532547060 -57 10 00.206639033   21.4 21.4     B5-A0I 849 1
43 ORC J1555+2726 Rad 15 55 24.65 +27 26 33.8           ~ 17 1
44 NAME LHB X 16 42.0 +02 19           ~ 414 0
45 SNR G000.9+00.1 SNR 17 47.3 -28 09           ~ 222 1
46 MCS J1752.0+4440 ClG 17 52 02.2 +44 40 38           ~ 68 0
47 ZwCl 1856+6616 ClG 18 56 38.4 +66 23 10           ~ 48 0
48 SS 433 HXB 19 11 49.5647697480 +04 58 57.827127648   16.854 14.643     A7Ib 2253 4
49 SNR G039.7-02.0 SNR 19 12 20 +04 55.0           ~ 378 1
50 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2
51 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
52 ACO 3685 ClG 20 32 19.2 -56 27 21           ~ 46 0
53 SNR G093.2+06.7 SNR 20 52 25 +55 19.3           ~ 87 0
54 ORC J2103-6200 Rad 21 02 58.30 -62 00 16.0           ~ 17 0
55 ACO 2345 ClG 21 27 05.391 -12 09 07.41           ~ 151 0
56 NGC 7236 LIN 22 14 44.9886363216 +13 50 47.450963760   14.3 14.3     ~ 286 1
57 CIZA J2242.8+5301 ClG 22 42 53.0 +53 01 05           ~ 228 0
58 PSZ1 G057.09-74.45 ClG 23 51 04.9 -19 54 48           ~ 12 0

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