Please use this identifier to cite or link to this item:
Title: Discovery of a giant radio halo in a massive merging cluster at z = 0.443
Authors: Dwarakanath, K.S.
Malu, S.S.
Kale, Ruta
Issue Date: Dec-2011
Publisher: Indian Academy of Sciences, Bangalore, India.
Citation: Journal of Astrophysics and Astronomy, 2011, Vol.32, p529.
Abstract: We have discovered a giant radio halo in the massive merging cluster MACSJ0417.5-1154. This cluster, at a redshift of 0.443, is one of the most X-ray luminous galaxy cluster in the MAssive Cluster Survey (MACS) with an X-ray luminosity in the 0.1-2.4 keV band of 2.9×1045 erg s - 1. Recent observations from GMRT at 230 and 610 MHz have revealed a radio halo of ˜ 1.2 × 0.3 Mpc2 in extent. This halo is elongated along the North-West, similar to the morphology of the X-ray emission from Chandra. The 1400 MHz radio luminosity (L r) of the halo is ˜2 × 1025 W Hz - 1, in good agreement with the value expected from the L x - L r correlation for cluster halos.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 0250-6335
Alternative Location: 10.1007/s12036-011-9109-1
Copyright: 2011 Indian Academy of Sciences, Bangalore, India.
Appears in Collections:Research Papers (A&A)

Files in This Item:
File Description SizeFormat 
  Restricted Access
Restricted Access316.76 kBAdobe PDFView/Open Request a copy

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.