Clusters without diffuse emission

MACSJ0011.7−1523 (z = 0.379)

This cluster has been classified as relaxed (e.g. Ebeling et al. 2010; Mantz et al. 2015). At the center of the cluster we detected a not resolved radio source with a flux density of ∼ 20 mJy. No high resolution radio observa- tions in L-band are reported in the literature and it was therefore not possi-

ble to estimate by difference the possibly presence of diffuse radio emission. Radio contours of the images (C array) reported in sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.04 mJy/beam. FWHM: 26.2"×14.5" (PA= 11.0°).

MACSJ0035.4−2015 (z = 0.352)

Ebeling et al. 2010 assigned to this cluster a morphological class 3 classi- fying it as a not relaxed cluster. In the literature no radio observations are reported. Both in the C an D array images there is no evidence of diffuse radio emission. Radio contours (C array) in sect. 6.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.18 mJy/beam. Restoring FWHM: 45"×45" (PA= 0°).

MACSJ0159.0−3412 (z = 0.458)

This extremely disturbed cluster (Mann & Ebeling 2012) is poorly studied in the literature. In our C and D array images there is no diffuse emission. The discrete radio sources near the center of the cluster have optical counterparts in the DSS2 (red) image. Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.05 mJy/beam. Restoring FWHM: 26"×26" (PA= 0°).

MACSJ0242.5−2132 (z = 0.314)

Mann & Ebeling (2012) assigned to MACSJ0242.5 a morphological class 1 and classified it as a relaxed cluster. In our C and D array radio images at the center of the cluster is present a not resolved bright radio source with flux density (1143 ± 57) mJy and extended ∼ 0.50 _{(∼ 150 kpc; C}

array). Hlavacek-Larrondo et al. (2013b) analyzed in a sample of clusters the AGN properties in brightest cluster galaxies (BCGs) reporting for the central source of this relaxed cluster a flux density at 1.4 GHz of (1255±73) mJy. Because of the lower value obtained with our observations we can not deduce in MACSJ0242.5 the presence of diffuse radio emission.

Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.18 mJy/beam. FWHM: 33.1"×14.3" (PA= −29.1°).

7.1. CLUSTERS WITHOUT DIFFUSE EMISSION 131

MACSJ0429.6−0253 (z = 0.399)

The radio image we have obtained with the C array of this relaxed cluster (Ebeling et al. 2010) shows the presence at the centre of a ∼ 145 kpc strong radio source not resolved. The flux density is (132.1±6.6) mJy. Hlavacek- Larrondo et al. (2013b) reported for the central BCG of MACSJ0429.6 a radio flux at 1.4 GHz of (138.8±8.1) mJy. Comparing these two fluxes, it would not seem to be present diffuse radio emission.

Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.07 mJy/beam. FWHM: 27.0"×13.9" (PA= −40.3°).

MACSJ0911.2+1746 (z = 0.505)

This extremely disturbed high redshift galaxy cluster in the FIRST and in the NVSS radio images does not show point sources at the centre. Our C, D and C+D array radio maps confirm the absence of discrete and diffuse radio sources in the central region of this cluster. Radio contours (C+D arrays) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.055 mJy/beam. FWHM: 27.7"×24.6" (PA= −63.7°).

MACSJ1115.2+5320 (z = 0.466)

Mann & Ebeling (2012) 2012 measured the projected offset of the brightest cluster galaxy from the peak of the X-ray emission assigning to this cluster a morphological class 1 and classifying it as relaxed. In our radio images there are no discrete and/or diffuse sources at the centre. Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.048 mJy/beam. FWHM: 19.0"×11.7" (PA= 28.0°).

MACSJ1115.8+0129 (z = 0.352)

This cluster has only been observed in D array. The FIRST radio image shows the presence of a point radio source in the centre of the cluster that has been classified as relaxed by Ebeling et al. (2010).

MACSJ1319.9+7003 (z = 0.327)

Classified as moderately disturbed this cluster, also known as Abell 1722, has been observed in radio band with the GMRT at 610 MHz by Kale et al. (2015b) but without the detection of diffuse radio emission. In our

C array radio map two point sources are shown at the peripheral of the X-ray emission but without diffuse emission. Radio contours (C array) of sect. 6.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.065 mJy/beam. Restoring FWHM: 22"×18" (PA= 0°).

MACSJ1720.2+3536 (z = 0.387)

With morphological class 1 this cluster is classified as relaxed. The C array radio images of our dataset show a central strong point-like radio source. The flux density is (17.2±0.9) mJy. Deriving the flux density at 1.4 GHz from the NVSS survey, Hlavacek-Larrondo et al. (2013b) reported for the central BCG of this cluster a value of (16.8±1.0) mJy comparable with our JVLA measure. There is no evidence of diffuse radio emission. Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.059 mJy/beam. FWHM: 15.7"×15.6" (PA= −51.2°).

MACSJ2049.9−3217 (z = 0.323)

In this disturbed cluster (morphological class 3; Ebeling et al. (2010)) there are no radio data reported in the literature. The radio images from our JVLA observations show some discrete radio sources near the centre of the cluster but without evidences of diffuse radio emission. Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.09 mJy/beam. FWHM: 40.9"×14.3" (PA= 14.2°).

MACSJ2214.9−1359 (z = 0.5027)

In our D array radio image of this moderately disturbed cluster we have not detected point sources or diffuse radio emission in the centre. Radio contours (D array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.06 mJy/beam. Restoring FWHM: 20"×20" (PA= 0°).

MACSJ2229.7−2755 (z = 0.324)

This cluster is classified as relaxed. There are not radio observations re- ported in the literature. Radio images in the D array show a bright central radio source extended ∼ 180 kpc with flux density of (4.3±0.2) mJy. From the observations in D array alone we can not suggest presence of diffuse radio emission. Radio contours (C array) of sect. 7.1.2 are drawn at (3,

7.1. CLUSTERS WITHOUT DIFFUSE EMISSION 133 6, 9, 12, 24, ...)×σ with rms noise σ = 0.2 mJy/beam. Restoring FWHM: 40"×40" (PA= 0°).

MACSJ2241.8+1732 (z = 0.314)

The C and D array images of our dataset show a point source also detected in the NVSS near the centre but without diffuse emission. No radio data are available in the literature. This cluster is also known as Abell 2742. Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.05 mJy/beam. FWHM: 19.2"×16.0" (PA= −55.8°).

MACSJ2245.0+2637 (z = 0.314)

Classified as relaxed by Ebeling et al. (2010), the C and D array images of this cluster show the presence of a central radio source with a flux density of (4.6±0.2) mJy. Giacintucci et al. (2017) investigating the occurrence of minihalos, reported for MACSJ2245.0 no detection of diffuse radio emission. High resolution L band observations, not reported in the literature, are needed to verify by difference the possible presence of a residual diffuse emission.

Radio contours (C array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.09 mJy/beam. FWHM: 17.2"×16.0" (PA= −56.3°).

MACSJ2311.5+0338 (z = 0.305)

In this disturbed cluster (morphological code 3; Ebeling et al. (2010)) we detected in the C+D array image two sources one of them located at the centre, not present in the NVSS and FIRST radio images. The density flux of this structure is (0.92±0.05) mJy. In the C array high resolution image (uv-range 7−22 kλ) the central radio emission is resoved in two point radio sources, labeled with A and B, with density flux of (0.69±0.06) and (0.28±0.05) respectively. Since there is no significant difference between the C+D and high resolution C emissions, we conclude that there is not detection of diffuse radio emission in MACSJ2231.5.

Radio contours (C+D array) of sect. 7.1.2 are drawn at (3, 6, 9, 12, 24, ...)×σ with rms noise σ = 0.04 mJy/beam. FWHM: 25.2"×18.2" (PA= 37.3°).