{"paper":{"title":"The giant lobes of Centaurus A observed at 118 MHz with the Murchison Widefield Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Deshpande, A. E. E. Rogers, A. R. Offringa, A. Roshi, A. R. Whitney, A. Williams, B. B. Kincaid, B. E. Corey, B. J. Hazelton, B. McKinley, B. M. Gaensler, C. J. Lonsdale, C. L. Williams, D. A. Mitchell, D. Emrich, D. G. Barnes, D. Herne, D. L. Kaplan, D. Oberoi, E. Kratzenberg, E. Morgan, F. Briggs, G. Bernardi, I. J. Feain, J. C. Kasper, J. D. Bowman, J. D. Bunton, J. E. Salah, J. N. Hewitt, J. Pathikulangara, J. S. B. Wyithe, J. Stevens, K. S. Srivani, L. Desouza, L. J. Greenhill, M. F. Morales, M. J. Lynch, M. Johnston-Hollitt, M. Waterson, N. Udaya Shankar, R. A. Remillard, R. B. Wayth, R. Goeke, R. J. Cappallo, R. J. Sault, R. Koenig, R. L. Webster, R. Subrahmanyan, S. J. Tingay, S. M. Ord, S. R. McWhirter, T. Prabu, W. Arcus","submitted_at":"2013-09-04T05:21:07Z","abstract_excerpt":"We present new wide-field observations of Centaurus A (Cen A) and the surrounding region at 118 MHz with the Murchison Widefield Array (MWA) 32-tile prototype, with which we investigate the spectral-index distribution of Cen A's giant radio lobes. We compare our images to 1.4 GHz maps of Cen A and compute spectral indices using temperature-temperature plots and spectral tomography. We find that the morphologies at 118 MHz and 1.4 GHz match very closely apart from an extra peak in the southern lobe at 118 MHz, which provides tentative evidence for the existence of a southern counterpart to the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0916","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}