A close quasar pair in a disk–disk galaxy merger at z = 2.17

Nature, Published online: 05 April 2023; doi:10.1038/s41586-023-05766-6

The authors report multiwavelength observations of SDSS J0749 + 2255, hosted by massive compact disk-dominated galaxies, as a kpc-scale, dual-quasar system hosted by a galaxy merger at cosmic noon.