First look Murchison Widefield Array observations of Abell 3667

L. Hindson, M. Johnston-Hollitt, N. Hurley-Walker, J. Morgan, K. Buckley, E. Carretti, K. S. Dwarakanath, M. Bell, G. Bernardi, R. Bhat, F. Briggs, A. A. Deshpande, A. Ewall-Wice, L. Feng, B. Hazelton, Daniel Jacobs, D. Kaplan, N. Kudryavtseva, E. Lenc, B. McKinleyD. Mitchell, B. Pindor, P. Procopio, D. Oberoi, A. R. Offringa, S. Ord, J. Riding, Judd Bowman, R. Cappallo, B. Corey, D. Emrich, B. M. Gaensler, R. Goeke, L. Greenhill, J. Kasper, E. Kratzenberg, C. Lonsdale, M. Lynch, R. McWhirter, M. Morales, E. Morgan, T. Prabu, A. Rogers, A. Roshi, U. Shankar, K. Srivani, R. Subrahmanyan, S. Tingay, M. Waterson, R. Webster, A. Whitney, A. Williams, C. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Murchison Widefield Array (MWA) is a new low frequency interferometric radio telescope, operating in the remote Murchison Radio Observatory in Western Australia. In this paper we present the first MWA observations of the well known radio relics in Abell 3667 (A3667) between 120 and 226 MHz. We clearly detect the radio relics in A3667 and present flux estimates and spectral indices for these features. The average spectral index of the north-west (NW) and south-east (SE) relics is -0.9 ± 0.1 between 120 and 1400 MHz. We are able to resolve spatial variation in the spectral index of the NW relic from -1.7 to -0.4, which is consistent with results found at higher frequencies.

Original languageEnglish (US)
Title of host publication2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467352253
DOIs
StatePublished - Oct 17 2014
Event31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014 - Beijing, China
Duration: Aug 16 2014Aug 23 2014

Publication series

Name2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014

Other

Other31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014
CountryChina
CityBeijing
Period8/16/148/23/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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    Hindson, L., Johnston-Hollitt, M., Hurley-Walker, N., Morgan, J., Buckley, K., Carretti, E., Dwarakanath, K. S., Bell, M., Bernardi, G., Bhat, R., Briggs, F., Deshpande, A. A., Ewall-Wice, A., Feng, L., Hazelton, B., Jacobs, D., Kaplan, D., Kudryavtseva, N., Lenc, E., ... Williams, C. (2014). First look Murchison Widefield Array observations of Abell 3667. In 2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014 [6930053] (2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/URSIGASS.2014.6930053