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Rafiei-Ravandi, M. Rahman, P. Chawla, P. Scholz, R. Karuppusamy, S. P. Tendulkar, T. A. Prince, T. Cassanelli, V. M. Kaspi, W. A. Majid, Z. Pleunis","submitted_at":"2020-04-13T17:31:42Z","abstract_excerpt":"We report on simultaneous radio and X-ray observations of the repeating fast radio burst source FRB 180916.J0158+65 using the Canadian Hydrogen Intensity Mapping Experiment (CHIME), Effelsberg, and Deep Space Network (DSS-14 and DSS-63) radio telescopes and the Chandra X-ray Observatory. During 33 ks of Chandra observations, we detect no radio bursts in overlapping Effelsberg or Deep Space Network observations and a single radio burst during CHIME/FRB source transits. We detect no X-ray events in excess of the background during the Chandra observations. 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