{"paper":{"title":"Nine New Repeating Fast Radio Burst Sources from CHIME/FRB","arxiv_id":"2001.03595","primary_cat":"astro-ph.HE","submitted_at":"2020-01-10T18:23:07+00:00","version_compiled":"v2"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. No sentence in this record was written by a language model.","schema":"pith.compiled-record/v0","status":"compiled","abstract":{"source":"arXiv listing abstract v2","sentences":[{"i":0,"p":0.98,"id":"s0","own":true,"role":"contribution","text":"We report on the discovery and analysis of bursts from nine new repeating fast radio burst (FRB) sources found using the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.97,"main_claim_p":0.53,"quantitative":true,"quantitative_p":0.92,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.02,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.98,"interpretation":0.0}},{"i":1,"p":1.0,"id":"s1","own":true,"role":"result","text":"These sources span a dispersion measure (DM) range of 195 to 1380 pc cm$^{-3}$.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.84,"main_claim_p":0.04,"quantitative":true,"quantitative_p":0.98,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":2,"p":0.99,"id":"s2","own":true,"role":"result","text":"We detect two bursts from three of the new sources, three bursts from four of the new sources, four bursts from one new source, and five bursts from one new source.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.97,"main_claim_p":0.05,"quantitative":true,"quantitative_p":0.98,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":3,"p":0.96,"id":"s3","own":true,"role":"result","text":"We determine sky coordinates of all sources with uncertainties of $\\sim$10$^\\prime$.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.97,"main_claim_p":0.04,"quantitative":true,"quantitative_p":0.96,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.96,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.03,"interpretation":0.0}},{"i":4,"p":1.0,"id":"s4","own":true,"role":"result","text":"We detect Faraday rotation measures for two sources, with values $-20(1)$ and $-499.8(7)$ rad m$^{-2}$, that are substantially lower than the RM derived from bursts emitted by FRB 121102.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.97,"main_claim_p":0.07,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":5,"p":0.95,"id":"s5","own":true,"role":"result","text":"We find that the DM distribution of our events, combined with the nine other repeaters discovered by CHIME/FRB, is indistinguishable from that of thus far non-repeating CHIME/FRB events.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.91,"main_claim_p":0.22,"quantitative":true,"quantitative_p":0.82,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.95,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.05}},{"i":6,"p":0.69,"id":"s6","own":true,"role":"interpretation","text":"However, as previously reported, the burst widths appear statistically significantly larger than the thus far non-repeating CHIME/FRB events, further supporting the notion of inherently different emission mechanisms and/or local environments.","hedge":{"p":0.88,"label":"asserted"},"own_p":0.65,"main_claim_p":0.21,"quantitative":true,"quantitative_p":0.93,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.31,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.69}},{"i":7,"p":0.68,"id":"s7","own":true,"role":"interpretation","text":"These results are consistent with previous work, though are now derived from 18 repeating sources discovered by CHIME/FRB during its first year of operation.","hedge":{"p":0.85,"label":"hedged_possibility"},"own_p":0.79,"main_claim_p":0.17,"quantitative":true,"quantitative_p":0.97,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.05,"background":0.11,"limitation":0.0,"future_work":0.0,"contribution":0.16,"interpretation":0.68}},{"i":8,"p":0.9,"id":"s8","own":true,"role":"result","text":"We identify candidate galaxies that may contain FRB 190303.J1353+48 (DM = 222.4 pc cm$^{-3}$).","hedge":{"p":0.94,"label":"hedged_possibility"},"own_p":0.94,"main_claim_p":0.05,"quantitative":true,"quantitative_p":0.88,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.9,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.1,"interpretation":0.0}}]},"compiled":{"main_claim":{"p":0.45,"text":"However, as previously reported, the burst widths appear statistically significantly larger than the thus far 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