The discovery of a radio halo in PLCK G147.3-16.6 at Z = 0.65
MetadataShow full item record
Recent X-ray and Sunyaev-Zel'dovich (SZ) observations have dramatically increased the number of known distant galaxy clusters. In some merging, low-redshift (z < 0.4) clusters, centrally located, diffuse, extended radio emission (radio halos) has been found. Using the Giant Metrewave Radio Telescope (GMRT), we report the detection of diffuse radio emission in the binary-merging cluster PLCK G147.3-16.6 located at z = 0.65. We classify the emission as a giant radio halo due to its large physical extent of about 0.9 Mpc and its low-surface brightness. We measure an integrated flux density of 7.3 ± 1.1 mJy at 610 MHz for the radio halo, resulting in a 1.4 GHz radio power of 5.1 × 1024 W Hz-1. The radio halo power is consistent with that expected from the known correlation between X-ray luminosity or the cluster integrated SZ signal and radio power. Our observations also suggest that more of these distant radio halos could be discovered with the GMRT. © 2014. The American Astronomical Society. All rights reserved.
Showing items related by title, author, creator and subject.
Bonafede, A.; Intema, Hubertus; Brüggen, M.; Vazza, F.; Basu, K.; Sommer, M.; Ebeling, H.; De Gasperin, F.; Röttgering, H.; Van Weeren, R.; Cassano, R. (2015)Radio haloes are synchrotron radio sources detected in some massive galaxy clusters. Their size of Mpc indicates that (re)acceleration processes are taking place in the host cluster. X-ray catalogues of galaxy clusters ...
An analysis of the halo and relic radio emission from Abell 3376 from Murchison widefield array observationsGeorge, L.; Dwarakanath, K.; Johnston-Hollitt, M.; Hurley-Walker, N.; Hindson, L.; Kapinska, A.; Tingay, Steven; Bell, M.; Callingham, J.; For, B.; Hancock, P.; Lenc, E.; McKinley, B.; Morgan, J.; Offringa, A.; Procopio, P.; Staveley-Smith, L.; Wayth, Randall; Wu, C.; Zheng, Q.; Bernardi, G.; Bowman, J.; Briggs, F.; Cappallo, R.; Corey, B.; Deshpande, A.; Emrich, D.; Goeke, R.; Greenhill, L.; Hazelton, B.; Kaplan, D.; Kasper, J.; Kratzenberg, E.; Lonsdale, C.; Lynch, Mervyn; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Oberoi, D.; Ord, S.; Prabu, T.; Rogers, A.; Roshi, A.; Udaya Shankar, N.; Srivani, K.; Subrahmanyan, R.; Waterson, M.; Webster, R.; Whitney, A.; Williams, A.; Williams, C. (2015)We have carried out multiwavelength observations of the nearby (z = 0.046) rich, merging galaxy cluster Abell 3376 with the Murchison Widefield Array (MWA). As a part of the GaLactic and Extragalactic All-sky MWA Survey, ...
Parekh, V.; Dwarakanath, K.; Kale, R.; Intema, Hubertus (2017)The goal of this study is to extend our current knowledge of the diffuse radio source (halo and relic) populations to z > 0.3. Here, we report GMRT and EVLA radio observations of six galaxy clusters taken from the MAssive ...