{"paper":{"title":"Discovery of a radio relic in the low mass, merging galaxy cluster PLCK G200.9-28.2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"((1) National Centre for Radio Astrophysics, (2) NASA Goddard Space Flight Centre, 3, (3) The Johns Hopkins University, 4), (4) Department of Physics, (5) Naval Research Laboratory, (6) INAF-Istituto di Radioastronomia, 7), (8) Leiden Observatory, Astronomy, Daniele Dallacasa (6, Daniel R. Wik (2, Francesco de Gasperin (8), Gianfranco Brunetti (6), India, Italy, Italy (7) Dipartimento di Fisica e Astronomia, Leiden University, Rossella Cassano (6), Ruta Kale (1), Simona Giacintucci (5), Tata Institute of Fundamental Research, the Netherlands), Tiziana Venturi (6), Universita di Bologna, University of Utah, USA","submitted_at":"2017-08-05T06:40:53Z","abstract_excerpt":"Radio relics at the peripheries of galaxy clusters are tracers of the elusive cluster merger shocks. We report the discovery of a single radio relic in the galaxy cluster PLCK G200.9-28.2 ($z=0.22$, $M_{500} = 2.7\\pm0.2 \\times 10^{14} M_{\\odot}$) using the Giant Metrewave Radio Telescope at 235 and 610 MHz and the Karl G. Jansky Very Large Array at 1500 MHz. The relic has a size of $\\sim 1 \\times 0.28$ Mpc, an arc-like morphology and is located at 0.9 Mpc from the X-ray brightness peak in the cluster. The integrated spectral index of the relic is $1.21\\pm0.15$. The spectral index map between 2"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.01718","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"}