{"paper":{"title":"An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. M. Archibald, A. P. V. Siemion, A. Seymour, B. Marcote, C. Brinkman, C. G. Bassa, C. J. Law, C. Sobey, D. Michilli, D. Whitlow, E. A. K. Adams, F. Fernandez, G. C. Bower, G. Hellbourg, G. H. Heald, J. M. Cordes, J. W. T. Hessels, K. Gourdji, L. G. Spitler, M. A. McLaughlin, N. Maddox, P. Demorest, P. Scholz, P. Van Rooy, R. S. Lynch, R. S. Wharton, S. Bogdanov, S. Chatterjee, S. M. Ransom, S. P. Tendulkar, T. J. W. Lazio, V. Gajjar, V. M. Kaspi, Z. Paragi","submitted_at":"2018-01-11T19:50:20Z","abstract_excerpt":"Fast radio bursts (FRBs) are millisecond-duration, extragalactic radio flashes of unknown physical origin. FRB 121102, the only known repeating FRB source, has been localized to a star-forming region in a dwarf galaxy at redshift z = 0.193, and is spatially coincident with a compact, persistent radio source. The origin of the bursts, the nature of the persistent source, and the properties of the local environment are still debated. Here we present bursts that show ~100% linearly polarized emission at a very high and variable Faraday rotation measure in the source frame: RM_src = +1.46 x 10^5 r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.03965","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"}