Latest Quasar Stories

2011-07-21 08:11:24

Whether on their own or orbiting as a pair, black holes don't typically sit still. Not only do they spin, they can also move laterally across their host galaxy. And according to astrophysicists at Brigham Young University, both types of movement power massive jets of energy known as quasars. The study, which appears in the current issue of Proceedings of the National Academy of Sciences (PNAS), is the first to compute what may fuel some of the brightest persistent lights in the universe....

2011-07-08 02:00:26

The discovery potential of the future international SKA radio telescope has been glimpsed following the commissioning of a working optical fibre link between CSIRO's Australian SKA Pathfinder (ASKAP) telescope in Western Australia, and other radio telescopes across Australia and New Zealand. The achievement will be announced at the 2011 International SKA Forum, taking place this week in Banff, Canada. On 29 June, six telescopes "“ ASKAP, three CSIRO telescopes in New South Wales, a...

2011-06-29 12:45:00

Scientists said on Wednesday that they have discovered the most distant quasar to date, thriving at a time when the Universe was less than 800 million years old. The object is around 100 million years younger than the previously known most distant quasar.  Prior to its discovery, the most distant quasar was about 870 million years old.  The scientists said the newly discovered object was around when the Universe was about 770 million years old, which is only five percent of its...

2011-06-15 12:55:00

NASA said on Wednesday that astronomers have found the first evidence that black holes were common in the early universe. The new discovery shows that very young black holes grew more aggressively than previously thought and in tandem with the growth of their host galaxies.  NASA's Chandra X-ray Observatory was used to help make this discovery. NASA said by pointing Chandra to a patch of sky for more than six weeks, astronomers obtained the Chandra Deep Field South (CDFS).  When...

2011-06-15 12:00:00

WASHINGTON, June 15, 2011 /PRNewswire-USNewswire/ -- Using the deepest X-ray image ever taken, astronomers found the first direct evidence that massive black holes were common in the early universe. This discovery from NASA's Chandra X-ray Observatory shows that very young black holes grew more aggressively than previously thought, in tandem with the growth of their host galaxies. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) By pointing Chandra at a patch of sky for more...

2011-05-20 14:29:00

WASHINGTON, May 20, 2011 /PRNewswire-USNewswire/ -- An international team, including NASA-funded researchers, using radio telescopes located throughout the Southern Hemisphere, has produced the most detailed image of particle jets erupting from a supermassive black hole in a nearby galaxy. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "These jets arise as infalling matter approaches the black hole, but we don't yet know the details of how they form and maintain...

2011-05-20 14:30:00

An international team, including NASA-funded researchers, using radio telescopes located throughout the Southern Hemisphere has produced the most detailed image of particle jets erupting from a supermassive black hole in a nearby galaxy. "These jets arise as infalling matter approaches the black hole, but we don't yet know the details of how they form and maintain themselves," said Cornelia Mueller, the study's lead author and a doctoral student at the University of Erlangen-Nuremberg in...

2011-05-03 06:30:00

Berkeley Lab-led BOSS proves it can do the job with quasars The biggest 3-D map of the distant universe ever made, using light from 14,000 quasars "“ supermassive black holes at the centers of galaxies billions of light years away "“ has been constructed by scientists with the third Sloan Digital Sky Survey (SDSS-III). The map is the first major result from the Baryon Oscillation Spectroscopic Survey (BOSS), SDSS-III's largest survey, whose principal investigator is David Schlegel...

2011-04-27 00:00:00

Looking for a surefire solution to fine lines, wrinkles and enlarged pores? Discover the revolutionary benefits of Baby Quasar MD, a light-based skin care device now available for at-home use. Sacramento, CA (PRWEB) April 25, 2011 Today's options for advanced, at-home beauty treatments bring professional skin care into the comfort of home. Using light-based technology, the Baby Quasar MD is one of the most powerful anti-aging tools on the market for radiant, youthful skin. Find out more...

2011-02-25 11:55:00

When two galaxies merge to form a giant, the central supermassive black hole in the new galaxy develops an insatiable appetite. However, this ferocious appetite is unsustainable. For the first time, observations with the Gemini Observatory clearly reveal an extreme, large-scale galactic outflow that brings the cosmic dinner to a halt. The outflow is effectively blowing the galaxy apart in a negative feedback loop, depriving the galaxy's monstrous black hole of the gas and dust it needs to...

Latest Quasar Reference Libraries

2004-10-19 04:45:44

Large-Scale Structure of the Cosmos -- Stars are organised into galaxies which in turn appear to form clusters and superclusters, separated by voids. Prior to 1989 it was commonly assumed that the superclusters were the largest structures in existence, and that they were distributed more-or-less uniformly throughout the universe in every direction. However, in 1989, Margaret Geller and John Huchra discovered the "Great Wall", a sheet of galaxies more than 500 million light years long...

2004-10-19 04:45:42

Supermassive Black Hole -- A Supermassive black hole is a black hole with a mass in the range of millions or billions solar masses. A supermassive black hole has some interesting properties differing from his low-mass cousins: -- The average density of a supermassive black hole can be very low, and actually can be lower than water's density. This happens because the black hole diameter increases linearly with mass, and consequently density drops much faster. -- Strong tidal...

2004-10-19 04:45:42

Redshift -- Redshift is the phenomenon that the frequency of light when observed, under certain circumstances, can be lower than the frequency of light when it was emitted at the source. This usually occurs when the source moves away from the observer, as in the Doppler effect. More specifically, the term redshift is used for the observation that the spectrum of light emitted by distant galaxies is shifted to lower frequencies (towards the red end of the spectrum, hence the name) when...

2004-10-19 04:45:41

Microquasar -- Microquasars are smaller cousins of quasars. They are named after quasars, as they have some common characteristics: strong and variable radio emission often seen as radio jets, and an accretion disk surrounding a black hole. In quasars, the black hole is supermassive (millions of solar masses) as in microquasars, the black hole mass is a few solar masses. In microquasars, the accreted mass comes from a normal star and the accretion disk is very luminous in optical regions...

2004-10-19 04:45:41

Gravitational Lens -- A gravitational lens is formed when the light from a very distant, bright object (such as a quasar) is "bent" around a massive object (such as a massive galaxy) between the bright object and the viewer. The process is known as gravitational lensing, and was one of the predictions made by Einstein's general relativity. Description In a gravitational lens, the gravity from the massive object bends light as a lens might. As a result, the path of the light from a...

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Word of the Day
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.