tokens: ACKNOWLEDGEMENTS We are grateful to Ling Sun, Joe Romano, David Keitel, and Paul Schale for useful discussion and comments. We also thank Tyson Littenberg for insightful comments and suggestions that improved the paper. SB acknowledges support by the Hoff Lu Fellowship at the University of Minnesota, and by NSF grant PHY-1806630. MWC is supported by the David and Ellen Lee Postdoctoral Fellowship at the California Institute of Technology. PDL is supported by ARC Future Fellowship FT160100112 and ARC Discovery Project DP180103155. ET and CT are supported by CE170100004. ET is supported by FT150100281. The authors are thankful for the computing resources provided by LIGO Laboratory. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation and operates under cooperative agreement PHY-0757058. All posterior corner plots were made with ChainConsumer (Hinton 2016 ). The code for the analysis in this paper is available upon request. A public release is being planned for the near future. This paper has been assigned document number LIGO-P1900107.
ner_tags: O O O O O B-Person I-Person B-Person I-Person B-Person I-Person O B-Person I-Person O O O O O O O O B-Person I-Person O O O O O O O O O B-Person O O O O B-Fellowship I-Fellowship I-Fellowship O O B-Organization I-Organization I-Organization O O B-Organization B-Grant I-Grant B-Person O O O O B-Fellowship I-Fellowship I-Fellowship I-Fellowship I-Fellowship I-Fellowship O O B-Organization I-Organization I-Organization I-Organization B-Person O O O B-Organization B-Fellowship I-Fellowship I-Fellowship O B-Organization B-Grant I-Grant I-Grant B-Person O B-Person O O O B-Grant B-Person O O O B-Grant O O O O O O O O O O B-Organization I-Organization B-Instrument O O O O B-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization O O O O B-Organization I-Organization I-Organization O O O O O B-Grant O O O O O O O B-Software B-Citation I-Citation O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Identifier