https://www.aanda.org/articles/aa/abs/2005/34/aa2852-05/aa2852-05.html
Microlensing in the double quasar SBS 1520+530 | Astronomy & Astrophysics (A&A)
in thedouble quasarastronomy astrophysicsmicrolensing
https://www.astronomy.com/science/snapshot-rare-double-quasar-caught-in-action/
Rare double quasar caught in action
May 18, 2023 - The Hubble Space Telescope recently spotted a rare double quasar in a pair of merging galaxies. When it merges with Andromeda in 4 billion years, our own...
double quasarrarecaughtaction
https://www.livescience.com/space/black-holes/nasa-discovers-ultra-rare-double-quasar-about-to-collide-into-an-unbelievably-massive-black-hole
NASA discovers ultra-rare 'double quasar' about to collide into an unbelievably massive black hole...
Apr 12, 2023 - A rare double quasar system 10 billion light-years away could help astronomers uncover the secrets of the early universe.