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Radio spectra of giant radio galaxies from RATAN-600 data
Authors:M L Khabibullina  O V Verkhodanov  M Singh  A Pirya  N V Verkhodanova  S Nandi
Institution:(1) Australia Telescope National Facility, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 76, Epping, New South Wales, 1710, Australia;(2) Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, T2N 1N4, Canada;(3) Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria, 3122, Australia;(4) Department of Physics and Astronomy, York University, Toronto, Ontario, M3J 1P3, Canada;(5) Institute for Computational Cosmology, University of Durham, Durham, DH1 3LE, UK;(6) Hartebeesthoek Radio Observatory, P.O. Box 443, Krugersdorp, 1740, South Africa;(7) School of Physics, The University of Sydney, Sydney, New South Wales, 2006, Australia;(8) Center for Astrophysics and Space Astronomy, University of Colorado, 389 UCB, Boulder, CO 80309-0389, USA;(9) Observatorio Astronomico Nacional, Alcara de Henares, Spain;(10) School of Mathematics and Physics, University of Tasmania, Private Bag 21, Hobart, Tasmania, 7001, Australia;(11) Astronomy Department, University of California-Berkeley, Berkeley, CA 94720, USA;(12) School of Chemistry & Physics, University of Adelaide, Adelaide, South Australia, 5006, Australia;(13) Department de Physique et Observatoire du Mont Megantic, Universite Laval, Quebec City, Quebec, G1K 7P4, Canada;(14) Department of Physics, McGill University, Montreal, Quebec, H3A 2T8, Canada;(15) Dominion Radio Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, Penticton, British Columbia, Canada;(16) Astronomy Department, California Institute of Technology, Pasadena, CA 91125, USA;(17) Department of Physics, La Trobe University, Melbourne, Victoria, 3086, Australia;(18) Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario, M5S 3H8, Canada;(19) Mount Stromlo and Siding Spring Observatory, Private Bag, Weston Creek, Canberra, Australian Capital Territory, 2601, Australia;(20) Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, V6T 1Z1, Canada;(21) School of Physics, University of Western Australia, Crawley, Western Australia, 6009, Australia;(22) Department of Imaging and Applied Physics, Curtin University of Technology, Bentley, Western Australia, Australia;(23) Manly Astrophysics Workshop Pty Ltd, Manly, New South Wales, 2095, Australia
Abstract:Measurements of the flux densities of the extended components of seven giant radio galaxies obtained using the RATAN-600 radio telescope at wavelengths of 6.25 and 13 cm are presented. The spectra of components of these radio galaxies are constructed using these new RATAN-600 data together with data from the WENSS, NVSS, and GB6 surveys. The spectral indices in the studied frequency range are calculated, and the need for detailed estimates of the integrated contribution of such objects to the background emission is demonstrated.
Keywords:
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