SIMBAD references

2016A&A...595A.116M - Astronomy and Astrophysics, volume 595A, 116-116 (2016/11-1)

ATCA observations of the MACS-Planck Radio Halo Cluster Project. I. New detection of a radio halo in PLCK G285.0-23.7.

MARTINEZ AVILES G., FERRARI C., JOHNSTON-HOLLITT M., PRATLEY L., MACARIO G., VENTURI T., BRUNETTI G., CASSANO R., DALLACASA D., INTEMA H.T., GIACINTUCCI S., HURIER G., AGHANIM N., DOUSPIS M. and LANGER M.

Abstract (from CDS):

Aims. We investigate the possible presence of diffuse radio emission in the intermediate redshift, massive cluster PLCK G285.0-23.7 (z=0.39, M500=8.39x1014M).
Methods. Our 16 cm-band ATCA observations of PLCK G285.0-23.7 allow us to reach a rms noise level of ∼11µJy/beam on the wide-band (1.1-3.1GHz), full-resolution (∼5 arcsec) image of the cluster, making it one of the deepest ATCA images yet published. We also re-image visibilities at lower resolution in order to achieve a better sensitivity to low-surface-brightness extended radio sources.
Results. We detect one of the lowest luminosity radio halos known at z>0.35, characterised by a slight offset from the well-studied 1.4GHz radio power vs. cluster mass correlation. Similarly to most known radio-loud clusters (i.e. those hosting diffuse non-thermal sources), PLCK G285.0-23.7 has a disturbed dynamical state. Our analysis reveals a similarly elongated X-ray and radio morphology. While the size of the radio halo in PLCK G285.0-23.7 is smaller than lower redshift radio-loud clusters in the same mass range, it shows a similar correlation with the cluster virial radius, as expected in the framework of hierarchical structure formation.

Abstract Copyright: © ESO, 2016

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: PLCK G285.0-23.7 - radio continuum: galaxies - galaxies: clusters: intracluster medium - radiation mechanisms: non-thermal

Simbad objects: 44

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2016A&A...595A.116M and select 'bookmark this link' or equivalent in the popup menu


2019.12.15-03:09:19

© Université de Strasbourg/CNRS

    • Contact