... galaxy-quasar combinations acting as lenses, a team of astronomers led by Frederic ... Quasar host galaxies are hard or even impossible to see because the central quasar ... quasar-lensesт?? that will allow them to determine masses for a statistically ...
... This means that the system could have been formed by interaction between the two adjacent quasars, but was probably not triggered by interaction with the more-distant third quasar. ...
... this quasar, named SDSS J0100+2802, will help scientists understand how quasars ... this new quasar is seven times brighter than the most distant quasar known, which is ...
... Space Telescope survey of 11 ultra-bright quasars that existed at the peak of the ... The quasars (powered by supermassive black holes) are so compact and bright they ...
... shown as a red spiral) causes light (dashed lines) from a background quasar to bend ... As a result, an observer may see multiple quasars instead of just one. ... In most cases the quasar images are only offset by an arcsecond, but occasionally ...
... one of the most distant, oldest, brightest quasars ever seen is hidden behind dust ... The quasar dates back to less than one billion years after the Big Bang. ... the view of the underlying galaxy of stars that the quasar is presumably embedded in ...
... The astronomers also found what appeared to be a nearby companion quasar, although the team proposed it was merely a second image of the original quasar produced by gravitational lensing. ...
... determined that quasars are incredibly variable, with some quasars quadrupling in ... is seen in nearly all quasars, with average quasars changing in brightness by 10 to ...