{"paper":{"title":"Deep LOFAR observations of the merging galaxy cluster CIZA J2242.8+5301","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. Bonafede, A. Stroe, C. Ferrari, D. D. Mulcahy, D. N. Hoang, E. Orr\\'u, F. De Gasperin, G. Brunetti, G. J. White, G. K. Miley, H. Akamatsu, H. J. A. R\\\"ottgering, H. T. Intema, J. M. F. Donnert, K. T. Chy\\.zy, L. Gu, M. Br\\\"uggen, M. Hoeft, R. Cassano, R. J. van Weeren, R. Pizzo, T. En{\\ss}lin, T. W. Shimwell","submitted_at":"2017-06-29T18:00:07Z","abstract_excerpt":"Previous studies have shown that CIZA J2242.8+5301 (the 'Sausage' cluster, $z=0.192$) is a massive merging galaxy cluster that hosts a radio halo and multiple relics. In this paper we present deep, high fidelity, low-frequency images made with the LOw-Frequency Array (LOFAR) between 115.5 and 179 MHz. These images, with a noise of 140 mJy/beam and a resolution of $\\theta_{\\text{beam}}=7.3\"\\times5.3\"$, are an order of magnitude more sensitive and five times higher resolution than previous low-frequency images of this cluster. We combined the LOFAR data with the existing GMRT (153, 323, 608 MHz)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.09903","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"}