At a redshift of 0.185, PDS 456 is a nearby luminous radio-quiet quasar. With a bolometric luminosity at a level of one quattuordecillion erg/s, it is the most luminous radio-quiet quasar at a ...

Caption Giant quasar and little red dots. A NASA/ESA/CSA James Webb Space Telescope (JWST) NIRCam picture of the luminous quasar J1148+5251, an extremely rare active supermassive black hole of 10 ...

The newly confirmed effect, which was discovered among six identical copies of a luminous quasar, could shed light on an issue that is beginning to plague cosmology, experts say. In 2018 ...

“The quasars become extremely luminous by friction from gas and dust falling into the supermassive black hole. In the case of this quasar, part of the material has been launched in the form of ...

3C 273, IRAS 12265+0219: The quasar 3C 273 glitters due to a supermassive black hole at its centre. PKS 2349: The image displays the slender tidal arms of a galaxy connected to a luminous quasar ...