Upgraded GMRT observations of the Coma cluster of galaxies: The observations

Abstract

We have used the upgraded Giant Metrewave Radio Telescope to map the Coma cluster of galaxies at 250-500 MHz and 1050-1450 MHz bands. These 6.26 arcsec and 2.18 arcsec resolutions observations allow detailed radio structures to be determined of all detected radio sources that show both discrete pointlike and extended morphologies. We present images of a subset of 32 brightest (flux density >= 30 mJy) and dominant sources, and several sources show discrete pointlike radio morphologies. We find the steepening of the spectra consistent with synchrotron cooling in the majority of sources and the median for spectral indices is -0.78, suggesting that ~59% sources have steep spectra. The nature and the statistical properties of the radio sources in the Coma cluster will be discussed in subsequent papers.

arXiv comment10 pages, 5 figures and 3 tables. Figures 1 and 6 are of low quality and Table 3 is in Long form in the ApJSS. Dedicated to the memory of Late Prof. Govind Swarup

References in corpus (16)

• The Coma cluster magnetic field from Faraday rotation measures
• An Accurate Flux Density Scale from 50 MHz to 50 GHz
• VLA HI imaging of the brightest spiral galaxies in Coma
• Outer Regions of the Cluster Gaseous Atmospheres
• Diffuse Radio Emission in/around the Coma Cluster: Beyond Simple Accretion
• Correcting direction-dependent gains in the deconvolution of radio interferometric images
• The gas distribution in the outer regions of galaxy clusters
• The build-up of the Coma cluster by infalling substructures
• The NGC4839 group falling into the Coma cluster observed by XMM-Newton
• Thermodynamics of the Coma Cluster Outskirts
• Discovery of a radio galaxy at z = 5.72
• The ram pressure stripped radio tails of galaxies in the Coma cluster
• Weak Lensing Mass Measurements of Substructures in COMA Cluster with Subaru/Suprime-Cam
• The Radio Properties of Type 2 Quasars
• A Deep VLA Radio Continuum Study of the Core and Outskirts of the Coma Cluster
• 3C 129 : The GMRT observations

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• High-resolution, High-sensitivity, Low-frequency uGMRT View of Coma Cluster of Galaxies
• NGC 4869 in the Coma cluster: twist, wrap, overlap and bend
• Exploring diffuse radio emission in galaxy clusters and groups with the uGMRT and the SKA
• A new look at old friends. I. Imaging classical radio galaxies with uGMRT and MeerKAT
• A Redshift Survey of the Coma Cluster (A1656): Understanding the Nature of Subhalos in the Weak-lensing Map