2019ApJ...880...70G


Query : 2019ApJ...880...70G

2019ApJ...880...70G - Astrophys. J., 880, 70-70 (2019/August-1)

Expanding the sample of radio minihalos in galaxy clusters.

GIACINTUCCI S., MARKEVITCH M., CASSANO R., VENTURI T., CLARKE T.E., KALE R. and CUCITI V.

Abstract (from CDS):

Radio minihalos are diffuse synchrotron sources of unknown origin found in the cool cores of some galaxy clusters. We use GMRT and VLA data to expand the sample of minihalos by reporting three new minihalo detections (A2667, A907, and PSZ1 G139.61+24.20) and confirming minihalos in five clusters (MACS J0159.8-0849, MACS J0329.6-0211, RXC J2129.6+0005, AS 780, and A3444). With these new detections and confirmations, the sample now stands at 23, the largest sample to date. For consistency, we also reanalyze archival VLA 1.4 GHz observations of seven known minihalos. We revisit possible correlations between the nonthermal emission and the thermal properties of their cluster hosts. Consistent with our earlier findings from a smaller sample, we find no strong relation between the minihalo radio luminosity and the total cluster mass. Instead, we find a strong positive correlation between the minihalo radio power and X-ray bolometric luminosity of the cool core (r < 70 kpc). This supplements our earlier result that most, if not all, cool cores in massive clusters contain a minihalo. Comparison of radio and Chandra X-ray images indicates that the minihalo emission is typically confined by concentric sloshing cold fronts in the cores of most of our clusters, supporting the hypothesis that minihalos arise from electron reacceleration by turbulence caused by core gas sloshing. Taken together, our findings suggest that the origin of minihalos should be closely related to the properties of thermal plasma in cluster cool cores.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): catalogs - galaxies: clusters: general - radio continuum: galaxies - surveys - X-rays: galaxies: clusters

CDS comments: Table 3: the radio sources SN are not in SIMBAD exept for MACS J0159.8-0849 S1 and MACS J0329.6-0211 S1. Table 9: Radio sources SNN are not in SIMBAD.

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2696 2
2 [GMV2014] MACS J0159.8-0849 S1 Rad 01 59 49.3 -08 49 59           ~ 2 0
3 PSZ2 G167.66-65.59 ClG 01 59 49.4 -08 50 00           ~ 75 0
4 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2116 1
5 ClG J0329-0212 ClG 03 29 41.6 -02 11 47           ~ 124 0
6 [GMV2014] MACS J0329.6-0211 S1 Rad 03 29 41.6 -02 11 47           ~ 2 0
7 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 359 1
8 ACO 478 ClG 04 13 20.7 +10 28 35           ~ 482 0
9 ACO S 465 ClG 04 31 28 -29 45.6           ~ 2 0
10 ICRF J054236.1+495107 Sy1 05 42 36.1380355416 +49 51 07.232213736   18.45 17.80 17.210   ~ 1400 1
11 PSZ1 G139.61+24.20 ClG 06 22 13.9 +74 41 39           ~ 23 0
12 ClG J0947+7623 ClG 09 47 12.9 +76 23 13           ~ 139 1
13 ACO 907 ClG 09 58 21.84 -11 03 47.5           ~ 122 0
14 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6       ~ 264 0
15 ACO 3444 ClG 10 23 53.1540 -27 15 07.840           ~ 72 0
16 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4115 2
17 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 510 0
18 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 657 1
19 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62     ~ 275 0
20 ACO S 780 ClG 14 59 29.1 -18 10 45           ~ 70 0
21 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 160 0
22 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 896 0
23 LEDA 1900245 Bla 15 32 53.780 +30 20 59.41   19.1   15.7   ~ 139 0
24 ACO 2142 ClG 15 58 20.00 +27 14 00.3           ~ 718 0
25 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3396 1
26 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 415 0
27 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 224 0
28 ACO 2319 ClG 19 20 45.3 +43 57 43           ~ 436 1
29 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 240 0
30 NAME Phoenix Cluster ClG 23 44 40.9 -42 41 54           ~ 157 0
31 ACO 2667 ClG 23 51 39.37 -26 05 02.7           ~ 163 0

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2022.09.26-09:16:42

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