Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/4422
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 arXiv.org (one of the alternative locations) |
URI: | http://hdl.handle.net/2289/4422 |
ISSN: | 0250-6335 0973-7758(online) |
Alternative Location: | http://adsabs.harvard.edu/abs/2011JApA...32..529D http://dx.doi.org/ 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 | Size | Format | |
---|---|---|---|---|
2011_JAA_V32_p529.pdf Restricted Access | Restricted Access | 316.76 kB | Adobe PDF | View/Open Request a copy |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.