Constraining a black hole companion for M87* through imaging by the Event Horizon TelescopeDOI: info:10.1093/mnrasl/slz108v. 488L90–L93
Safarzadeh, Mohammadtaher, Loeb, Abraham, and Reid, Mark. 2019. "Constraining a black hole companion for M87* through imaging by the Event Horizon Telescope." Monthly Notices of the Royal Astronomical Society, 488 L90–L93. https://doi.org/10.1093/mnrasl/slz108.