Sentences with phrase «from active black holes»
Her dissertation work focused on studying and modeling the extremely energetic outflows from active black holes at galactic centers.
http://aasnova.org/ Not exact matches
In a recent paper published in The Astrophysical Journal, Boorman (and colleagues from the NuSTAR active galaxies science team) described how data from NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has been used to study the intrinsic behaviour of a «hidden» supermassive black hole in a galaxy nearby to our own — IC 3639 — some 175 million light years from Earth, relatively close by in cosmic terms.
One alternative is the galaxy's active nucleus, with radio emission coming from jets of material emitted from the region surrounding a supermassive black hole.
It may be the result of an active galactic nucleus, where energy is gushing from a supermassive black hole.
Quasar An active galactic nucleus derives its high energy from gas accreting on the center of a supermassive black hole.
The emission instead originates from an active galactic nucleus that is powered by a supermassive black hole.
Although the findings confirm that active supermassive black holes emit plenty of x-rays, he explains, whether the radiation actually empties galaxies of their gas «is a good hypothesis — though still far from a certainty.»
«These new observations have allowed us to narrow down the emissions to a very small region, typical of an active nucleus — i.e. jets emanating from a supermassive black hole.
To measure the mass and growth rate of these galaxies» active nuclei — the supermassive black holes at the galaxies» centers — the researchers used data from 12 different ground - based telescopes spread across the globe to complement the data from the Swift satellite.
The source directions of the most energetic cosmic rays correlate with locations of nearby active galactic nuclei, implying that they form from supermassive black holes.
Science Interests Formation of galaxies and black holes in the early universe and their growth over cosmic time; large surveys with Hubble and other telescopes to discover new populations of distant galaxies and black holes; physical properties of active galactic nuclei using observations from radio, infrared, optical, ultraviolet through to X-ray energies.
The top candidates, the astronomers suggested, are a neutron star, possibly a highly - magnetic magnetar, surrounded by either material ejected by a supernova explosion or material ejected by a resulting pulsar, or an active nucleus in the galaxy, with radio emission coming from jets of material emitted from the region surrounding a supermassive black hole.
A team of scientists from 17 countries have found the most likely origin of galactic cosmic rays - the centres of distant galaxies (Active Galactic Nuclei) powered by supermassive black holes.
The problem, of course, stems from the fact that with the exception of active black holes — which are surrounded with a bright accretion disk — it is kind of hard to hunt down objects that do not allow even light to escape their gravitational pull.
Previous observations had revealed that these filaments that stretch out from NGC 4696's main body encircle a bright centre, where an active supermassive black hole is feeding on dust and debris and heating up the surrounding gas to temperatures that make it glow white - hot.
«This cloud, about 25 light - years away from the black hole, represents a «missing link» that will help us understand the complex regions around the central black holes in active galaxies,» said Jose - Luis Gomez, the team leader.
«We want to understand why only a small fraction of supermassive black holes are active,» said Benedetta Vulcani, an astronomer from the University of Melbourne, in a statement.
«This strong link between ram pressure stripping and active black holes was not predicted and has never been reported before,» said team leader Bianca Poggianti from the INAF - Astronomical Observatory of Padova in Italy.
The halos around quasars — the brightest and the most active objects in the universe, they are galaxies formed less than 2 billion years after the Big Bang; they have supermassive black holes in their centers and consume stars, gas, interstellar dust and other material at a very fast rate — are made of gas known as the intergalactic medium and extend for up to 300,000 light - years from the centers of the quasars.