Sentences with phrase «bright core»
The ideal background «lights» for such a study are quasars, which are very distant bright cores of active galaxies powered by black holes.
sciencedaily.com
Because the gas in the halo is dark, the team measured it by using the light from quasars, the very distant bright cores of active galaxies powered by black holes.
The two black holes live roughly 3.7 billion light - years away in a quasar, the ferociously bright core of a galaxy lit up by...
The «jury» didn't know which galaxies were active and which ones were quiet, as the Hubble images had been processed to hide the telltale bright cores.
But Type I galaxies» stars are hard to observe — extremely bright cores drown out the light from the galaxy's stars.
No single bright core is found, ruling out the possibility that Himiko is powered by a supermassive black hole.
Quasars are bright cores of distant active galaxies.
The dusty spiral arms stand out wonderfully, and its two dwarf elliptical companions are visible: NGC 205 to the right of the spiral's bright core, and M32 almost buried in M31's arms on the left.
A beautiful mixture of hot, blue star - forming regions, redder, cooler regions of gas, and dark lanes of opaque dust can be seen, all swirling together around a bright core.
Astronomers have scrutinized about 100 nebulas for signs of a small, faint companion amid the glare of the bright core, but so far, in some five out of six cases they've come up empty.
But recently, a survey has found several quasars — bright cores of galaxies, powered by matter falling into a supermassive black hole — that existed less than a billion years after the big bang.
After seven billion years, the merged galaxies form a huge elliptical galaxy, its bright core dominating the nighttime sky (Image: NASA / STScI)
It has a bright core surrounded by a faint but extensive halo of stars.
A billion solar - mass black hole lies at the heart of the bright core.
(Final row right): 7 Billion Years - The merged galaxies form a huge elliptical galaxy, its bright core dominating the nighttime sky.
The researchers» conclusions were based on observations of ultraviolet light from 47 distant quasars — which are bright cores of distant active galaxies — made using the Hubble Space Telescope's cosmic origins spectrograph.
«It also has a very bright core, so I thought it would be a good place to search for a massive black hole.»
Fourth Row, Right: In 7 billion years the merged galaxies form a huge elliptical galaxy, its bright core dominating the nighttime sky.