News tagged with mergers

Most quasars live on snacks, not large meals

( -- Black holes in the early universe needed a few snacks rather than one giant meal to fuel their quasars and help them grow, according to observations from NASA's Spitzer and Hubble space telescopes.

dateJun 20, 2012 in Astronomy
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Merging galaxies create a binary quasar (w/ Video)

Astronomers have found the first clear evidence of a binary quasar within a pair of actively merging galaxies. Quasars are the extremely bright centers of galaxies surrounding super-massive black holes, and binary quasars ...

dateFeb 03, 2010 in Astronomy
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'Cosmic fruit machine' matches collisions

( -- A new website will give everyone the chance to contribute to science by playing a 'cosmic fruit machine' and compare images of colliding galaxies with millions of simulated images of galactic pile-ups.

dateNov 24, 2009 in Astronomy
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Galaxy Cores to Crash in a Few Million Years

( -- A new image from NASA's Spitzer Space Telescope offers a rare view of an imminent collision between the cores of two merging galaxies, each powered by a black hole with millions of times the mass of the sun. ...

dateMar 16, 2009 in Astronomy
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The cosmic evolution of galaxies

Our knowledge of the big bang has increased dramatically in the past decade, as satellites and ground-based studies of the cosmic microwave background have refined parameters associated with the very early universe, achieving ...

dateMay 11, 2015 in Astronomy
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Violent origins of disc galaxies probed by ALMA

For decades scientists have believed that galaxy mergers usually result in the formation of elliptical galaxies. Now, for the the first time, researchers using the Atacama Large Millimeter/sub-millimeter Array and a host ...

dateSep 17, 2014 in Astronomy
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Galaxy winds

( —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) is emitted at infrared ...

dateSep 23, 2013 in Astronomy
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