{ "id": "2001.05436", "version": "v1", "published": "2020-01-15T17:13:49.000Z", "updated": "2020-01-15T17:13:49.000Z", "title": "Limits on the Electromagnetic Counterpart to S190814bv", "authors": [ "Alan M. Watson", "Nathaniel R. Butler", "William H. Lee", "Rosa L. Becerra", "Margarita Pereyra", "Fernando Angeles", "Alejandro Farah", "Liliana Figueroa", "Diego González-Buitrago", "Fernando Quirós", "Jaime Ruíz-Díaz-Soto", "Carlos Tejada de Vergas", "Silvio J. Tinoco", "Tanner Wolfram" ], "comment": "Accepted by MNRAS. 6 pages", "categories": [ "astro-ph.HE", "astro-ph.IM" ], "abstract": "We derive limits on any electromagnetic counterpart to the compact binary merger S190814bv, whose parameters are consistent with the merger of a black hole and a neutron star. We present observations with the new wide-field optical imager DDOTI and also consider Swift/BAT observations reported by Palmer et al. (2019). We show that Swift/BAT would have detected a counterpart with similar properties to a typical on-axis short GRB at the 98 per cent confidence level, whereas our DDOTI observations only rule out such a counterpart at the 27 per cent confidence level. Neither have sufficient sensitivity to rule out an off-axis counterpart like GW 170817. We compare the efficiency of Swift/BAT and DDOTI for future observations, and show that DDOTI is likely to be about twice as efficient as Swift/BAT for off-axis events up to about 100 Mpc.", "revisions": [ { "version": "v1", "updated": "2020-01-15T17:13:49.000Z" } ], "analyses": { "keywords": [ "electromagnetic counterpart", "cent confidence level", "compact binary merger s190814bv", "wide-field optical imager ddoti", "typical on-axis short grb" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable" } } }