20 April 2020
New research shows interstellar visitor 21/Borisov is not your average comet
...relatively CO-rich environment—probably beyond the CO ice-line in the very cold, outer regions of a distant protoplanetary accretion disk.” While it is difficult to be sure that the observed coma abundances represent the bulk composition of volatiles...
24 January 2018
Scientists uncover common origin for ultrahigh-energy particles
..., and sometimes several, super-massive black holes at their centre, and when matter falls into the accretion disks around these black holes, the release of the gravitational energy of the infalling matter produces an active nucleus...
14 March 2018
Researchers rethink quasar connection after new find
... around 20 were previously known about. Quasars on the other hand consist of a supermassive black hole surrounded by an orbiting accretion disk of gas. They are among the most luminous, powerful, and energetic objects known in the universe, emitting...
07 April 2021
Astronomers find a rare pair of double quasars in the early Universe
... insight into galaxy mergers in the early Universe. Lighting up the way to the heart of a feeding black hole is an accretion disk so bright, its luminosity is enough to outshine the light emitted from entire galaxies. Known as active galactic nuclei...
