Evidence for a Compact Object in the Aftermath of the Extra-Galactic Transient AT2018cow

Dheeraj R. Pasham, Wynn C. G. Ho, William Alston, Ronald Remillard, Mason Ng, Keith Gendreau, Brian D. Metzger, Diego Altamirano, Deepto Chakrabarty, Andrew Fabian, Jon Miller, Peter Bult, Zaven Arzoumanian, James F. Steiner, Tod Strohmayer, Francesco Tombesi, Jeroen Homan, Edward M. Cackett, Alice Harding