The unseen host galaxy and high dispersion measure of a precisely localized fast radio burst suggests a high-redshift origin

Lachlan Marnoch^*, Stuart D. Ryder, Clancy W. James, Alexa C. Gordon, Mawson W. Sammons, J. Xavier Prochaska, Nicolas Tejos, Adam T. Deller, Danica R. Scott, Shivani Bhandari, Marcin Glowacki, Elizabeth K. Mahony, Richard M. McDermid, Elaine M. Sadler, Ryan M. Shannon, Hao Qiu