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Keyword: quasar

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  • More Evidence for Coming Black Hole Collision (total mass > a billion suns)

    09/22/2015 9:34:46 AM PDT · by LibWhacker · 49 replies
    NYTimes ^ | 9/16/15 | Dennis Overbye
    The apocalypse is still on, apparently — at least in a galaxy about 3.5 billion light-years from here. Last winter, a team of Caltech astronomers reported that two supermassive black holes appeared to be spiraling together toward a cataclysmic collision that could bring down the curtains in that galaxy. The evidence was a rhythmic flickering from the galaxy’s nucleus, a quasar known as PG 1302-102, which Matthew Graham and his colleagues interpreted as the fatal mating dance of a pair of black holes with a total mass of more than a billion suns. Their merger, the astronomers calculated, could release...
  • NASA’s Hubble Finds Giant Halo Around the Andromeda Galaxy

    05/09/2015 6:27:38 AM PDT · by BenLurkin · 25 replies
    nasa ^ | Rob Gutro
    Scientists using NASA’s Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy, our nearest massive galactic neighbor, is about six times larger and 1,000 times more massive than previously measured. The dark, nearly invisible halo stretches about a million light-years from its host galaxy, halfway to our own Milky Way galaxy. This finding promises to tell astronomers more about the evolution and structure of majestic giant spirals, one of the most common types of galaxies in the universe. “Halos are the gaseous atmospheres of galaxies. The properties of these gaseous halos control the rate...
  • Black hole 12bn times more massive than sun is discovered

    02/28/2015 10:32:14 AM PST · by Ernest_at_the_Beach · 60 replies ^ | Feb 25, 2015 | Press Association
    Scientists name new ‘object’ SDSS J0100+2802 and say it is 12.8bn light years from Earth and was formed just 900m years after the Big Bang *************************************************************A monster black hole powering “the brightest lighthouse in the distant universe” has been discovered that is 12bn times more massive than the sun, scientists have revealed.The extraordinary object is at the centre of a quasar - an intensely powerful galactic radiation source - with a million billion times the sun’s energy output.For years the nature of quasars, discovered in 1963, remained a mystery. Today scientists believe they are generated by matter heating up as...
  • Monster Black Hole Is the Largest and Brightest Ever Found

    02/26/2015 5:24:51 AM PST · by C19fan · 27 replies ^ | February 25, 2015 | Charles Q. Choi
    Astronomers have discovered the largest and most luminous black hole ever seen — an ancient monster with a mass about 12 billion times that of the sun — that dates back to when the universe was less than 1 billion years old. It remains a mystery how black holes could have grown so huge in such a relatively brief time after the dawn of the universe, researchers say.
  • This quasar should not exist -- and yet it does

    11/09/2013 11:07:04 PM PST · by SunkenCiv · 10 replies
    io9 ^ | November 9th, 2013 | George Dvorsky
    Astronomers from York University in Canada have identified an undocumented type of quasar where gas appears to be getting sucked into a black hole. This may not sound surprising, but current theories say that isn't supposed to happen. Quasars are hyperactive and extremely bright discs of hot gas that surround supermassive black holes. They're also known as galactic nucleuses. The Milky Way has one at its center. All the junk that's rapidly spinning down the drain hole forms a compact disc with a radius that's larger than Earth's orbit around the Sun and a temperature that's hotter than the surface...
  • MONSTER QUASAR BLAST blows stunned astro boffins' WIGS OFF

    11/28/2012 2:18:51 PM PST · by Ernest_at_the_Beach · 22 replies
    The Register ^ | 28th November 2012 16:40 GMT | Kelly Fiveash, Networks Correspondent
    Physics boffins have discovered a dying galaxy whose black hole core has emitted the biggest burst of energy ever to be found by scientists. Researchers at Virginia Tech in the US examined the record-breaking quasar, dubbed SDSS J1106+1939, using a colossal telescope in Paranal, Chile to observe what they described as a "monster outflow". They explained that the rate at which energy was carried away by the lusty mass of material ejected was equivalent to two trillion times the power output of the sun. "This is about 100 times higher than the total power output of the Milky Way galaxy,"...
  • Brilliant, But Distant: Most Far-Flung Known Quasar Offers Glimpse Into Early Universe

    07/31/2011 8:36:55 AM PDT · by blam · 22 replies
    Scientific American ^ | 7-29-2011 | John Matson
    Brilliant, But Distant: Most Far-Flung Known Quasar Offers Glimpse into Early UniverseA gargantuan black hole has been spotted voraciously devouring material just 770 million years after the big bangBy John Matson June 29, 2011 GLOWING GOBBLER: An artist's conception of a quasar ionizing the hydrogen gas surrounding it.Image: Gemini Observatory Peering far across space and time, astronomers have located a luminous beacon aglow when the universe was still in its infancy. That beacon, a bright astrophysical object known as a quasar, shines with the luminosity of 63 trillion suns as gas falling into a supermassive black holes compresses, heats up...
  • Mysterious radio waves emitted from nearby galaxy

    04/14/2010 2:55:48 PM PDT · by TaraP · 72 replies · 2,406+ views
    New Scientist ^ | April 14th, 2010
    There is something strange in the cosmic neighbourhood. An unknown object in the nearby galaxy M82 has started sending out radio waves, and the emission does not look like anything seen anywhere in the universe before. "We don't know what it is," says co-discoverer Tom Muxlow of Jodrell Bank Centre for Astrophysics near Macclesfield, UK. The thing appeared in May last year, while Muxlow and his colleagues were monitoring an unrelated stellar explosion in M82 using the MERLIN network of radio telescopes in the UK. A bright spot of radio emission emerged over only a few days, quite rapidly in...
  • Mysterious New Object Discovered in Space

    04/19/2010 6:20:26 PM PDT · by KevinDavis · 29 replies · 962+ views ^ | 04/19/10 | Charles Q. Choi
    A strange and mysterious new object in space may the brightest and long-lasting "micro-quasar" seen thus far, a miniature version of the brightest objects in the universe. The object suddenly began pumping out radio waves last year in the relatively nearby galaxy M82, some 10 million light-years away. Its discovery was announced Tuesday. "The new object, which appeared in May 2009, has left us scratching our heads — we've never seen anything quite like this before," said researcher Tom Muxlow, a radio astronomer at the University of Manchester's Jodrell Bank Observatory in England.
  • Mysterious quasar casts doubt on black holes

    07/28/2006 5:45:35 PM PDT · by annie laurie · 10 replies · 312+ views
    NewScientistSpace ^ | 27 July 2006 | David Shiga
    A controversial alternative to black hole theory has been bolstered by observations of an object in the distant universe, researchers say. If their interpretation is correct, it might mean black holes do not exist and are in fact bizarre and compact balls of plasma called MECOs. Rudolph Schild of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, US, led a team that observed a quasar situated 9 billion light years from Earth. A quasar is a very bright, compact object, whose radiation is usually thought to be generated by a giant black hole devouring its surrounding matter. A rare cosmological...
  • Can A 'Distant' Quasar Lie Within A Nearby Galaxy?

    01/10/2005 1:30:09 PM PST · by PatrickHenry · 163 replies · 2,725+ views
    University of California, San Diego ^ | 10 January 2005 | Kim McDonald
    An international team of astronomers has discovered within the heart of a nearby spiral galaxy a quasar whose light spectrum indicates that it is billions of light years away. The finding poses a cosmic puzzle: How could a galaxy 300 million light years away contain a stellar object several billion light years away? The team’s findings, which were presented today in San Diego at the January meeting of the American Astronomical Society and which will appear in the February 10 issue of the Astrophysical Journal, raise a fundamental problem for astronomers who had long assumed that the “high redshifts” in...
  • Universal Truths: Distant quasars reveal content, age of universe

    08/06/2004 3:28:25 AM PDT · by PatrickHenry · 49 replies · 969+ views
    Science News ^ | 31 July 2004 | Ron Cowen
    Using 3,000 recently discovered quasars as searchlights on the distant universe, astronomers have mapped with unprecedented precision the distribution of the diffuse gas between galaxies. By combining these measurements with observations of the faint microwave glow of radiation left over from the Big Bang and other cosmological data, the researchers report that they have pinned down the age of the universe to an accuracy 5 times greater than ever before. By their reckoning, the cosmos is 13.6 billion years old, give or take 200 million years. The findings also uphold a leading model of cosmic evolution known as inflation, says...
  • Astronomy Picture of the Day 11-28-03

    11/27/2003 11:40:27 PM PST · by petuniasevan · 4 replies · 230+ views
    NASA ^ | 11-28-03 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 November 28 The Most Distant X-Ray Jet Credit: A. Siemiginowska (CfA) et al., CXC, NASAIllustration by M.Weiss (CXC) Explanation: A false-color x-ray image inset at upper left reveals emission from a cosmic jet of high-energy particles, 100,000 light-years in length, emerging from quasar GB1508+5714. An estimated 12 billion (12,000,000,000) light-years away, this appears to be the most distant energetic jet in the known Universe. Astrophysical jets of...
  • Astronomy Picture of the Day 5-20-03

    05/20/2003 5:26:07 AM PDT · by petuniasevan · 8 replies · 228+ views
    NASA ^ | 5-20-03 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 May 20 A Primordial Quasar Drawing Credit: Wolfram Freudling et al. (STECF), ESO, ESA, NASA Explanation: What did the first quasars look like? The nearest quasars are now known to be supermassive black holes in the centers of galaxies. Gas and dust that falls toward a quasar glows brightly, sometimes outglowing the entire home galaxy. The quasars that formed in the first billion years of the universe...
  • Twinkle, Twinkle, Little Quasar

    12/11/2002 10:04:12 PM PST · by Ernest_at_the_Beach · 1 replies · 113+ views
    Yahoo ^ | Mon Dec 9, 9:06 AM ET | Robert Roy Britt Senior Science Writer,
    Some very distant galaxies called quasars are lit up dramatically by powerful black holes. Oddly, their radio emissions shimmer and twinkle when detected from Earth, even though radio waves are barely scrambled by Earth's atmosphere the way visible light is. One quasar, called PKS 0405-385, brightens and fades by 50 percent in less than an hour. Astronomers have concocted all manner of exotic theories to explain the behavior of the faraway, compact galaxies. The real answer, it seems, is unexpectedly closer at hand but still as interesting as anything imagined. New observations of PKS 0405-385 reveal that a layer of...
  • Astronomy Picture of the Day 10-07-02

    10/06/2002 11:34:06 PM PDT · by petuniasevan · 6 replies · 250+ views
    NASA ^ | 10-07-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 October 7 The Galaxy and the Quasar Credit: R. Knacke (Penn State Erie) et al., Hubble Heritage Team, NASA Explanation: Is the galaxy in the center connected to the quasar on the upper right? Disagreements about systems like this have raged for decades and have been used to challenge the foundations of modern cosmology. Some believe that the quasar Markarian 205 was recently ejected from galaxy NGC...
  • Vanity McVeigh and 9/11

    09/12/2002 8:29:43 PM PDT · by Treeless Branch · 11 replies · 266+ views
    me | me
    When McVeigh smiled a content grin before he was killed, could it be it was because he knew 9/11 was coming. It was a grin saying I know something you don't. Thoughts?