News tagged with quasars
Related topics: astronomers , galaxies , black holes
Free-floating planets in the Milky Way outnumber stars by factors of thousands
A few hundred thousand billion free-floating life-bearing Earth-sized planets may exist in the space between stars in the Milky Way. So argues an international team of scientists led by Professor Chandra Wickramasinghe, Director ...
May 10, 2012 |
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X-ray quasars, and a distance record
Quasars are thought to be galaxies whose bright nuclei contain massive black holes around which disks are actively accreting matter. The accretion process releases vast amounts of energy, often including a ...
Apr 30, 2012 |
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Twinkle, twinkle, little star: I?m going to know what you are
A team of astronomers at the University of Cambridge is taking the next big step in a European-wide programme which will lead to the creation of the first three-dimensional map of more than a billion stars.
Apr 26, 2012 |
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'Cosmic mirages' confirm accelerated cosmic expansion
(Phys.org) -- An international team of researchers led by Masamune Oguri at Kavli IPMU and Naohisa Inada at Nara National College of Technology conduced an unprecedented survey of gravitationally lensed quasars, ...
Apr 11, 2012 |
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Astronomers using Hubble discover quasars acting as gravitational lenses
(PhysOrg.com) -- Astronomers using NASA's Hubble Space Telescope have found several examples of galaxies containing quasars, which act as gravitational lenses, amplifying and distorting images of galaxies ...
Mar 15, 2012 |
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The origins of a torus in a galactic nucleus
(PhysOrg.com) -- Quasars are among the most energetic objects in the universe, with some of them as luminous as ten thousand Milky Way galaxies. Quasars are thought to have massive black holes at their cores, ...
Mar 13, 2012 |
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Cosmic research picked in breakthroughs of 2011
(PhysOrg.com) -- Astronomers from the Dark Cosmology Center at the Niels Bohr Institute have developed a groundbreaking method for measuring long distances in the universe using light from quasars. Quasars ...
Dec 19, 2011 |
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The birth of a telescope 30 times larger than Earth
(PhysOrg.com) -- On 15 November 2011, the Effelsberg 100-meter radio telescope, together with three Russian and one Ukrainian telescope, took part in the first interferometric observations with the orbiting ...
Dec 08, 2011 |
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Astronomers find pristine clouds of primordial gas from the early Universe
(PhysOrg.com) -- For the first time, astronomers have found pristine clouds of the primordial gas that formed in the first few minutes after the Big Bang. The composition of the gas matches theoretical predictions, ...
Nov 10, 2011 |
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Astronomers discover new way to measure Universe
(PhysOrg.com) -- Astronomers at Copenhagen's Niels Bohr Institute have found a new way to measure distances. This may not sound like much, but working out how far away something is, is one of the toughest ...
Sep 27, 2011 |
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Astrophysicists identify missing fuel for galactic star formation
(PhysOrg.com) -- The Milky Way will have the fuel to continue forming stars, thanks to massive clouds of ionized gas raining down from its halo and intergalactic space. This is the conclusion of a new study ...
Aug 25, 2011 |
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Earliest watery black hole discovered
Water really is everywhere. Two teams of astronomers, each led by scientists at the California Institute of Technology (Caltech), have discovered the largest and farthest reservoir of water ever detected in ...
Jul 22, 2011 |
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Movement of black holes powers the universe's brightest lights
Whether on their own or orbiting as a pair, black holes don't typically sit still.
Jul 20, 2011 |
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Astronomers find universe's most distant quasar (w/ video)
(PhysOrg.com) -- A team of European astronomers has used ESO’s Very Large Telescope and a host of other telescopes to discover and study the most distant quasar found to date. This brilliant beacon, powered ...
Jun 29, 2011 |
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LOFAR creates deeper images of universe than ever before
An international team led by astronomers at ASTRON and the Kapteyn Institute of the University of Groningen have used the LOFAR telescope, designed and constructed by ASTRON, to make the deepest wide-field ...
Jun 02, 2011 |
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