Discovery of the Closest Binary Supermassive Black Hole System in the Galaxy NGC 7674- September 2017http://www.ncra.tifr.res.in/ncra/outreach/press-releases/press-note-for-new-discovery.pdf/viewhttp://www.ncra.tifr.res.in/ncra/@@site-logo/logo.jpg
Discovery of the Closest Binary Supermassive Black Hole System in the Galaxy NGC 7674