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Keyword: xmmnewton

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  • XMM-Newton takes astronomers to a black hole’s edge (swallowing equivalent of two Earths per hour)

    05/27/2009 12:26:10 PM PDT · by NormsRevenge · 22 replies · 928+ views
    European Space Agency ^ | 5/27/09 | ESA
    Using new data from ESA’s XMM-Newton spaceborne observatory, astronomers have probed closer than ever to a supermassive black hole lying deep at the core of a distant active galaxy. The galaxy – known as 1H0707-495 – was observed during four 48-hr-long orbits of XMM-Newton around Earth, starting in January 2008. The black hole at its centre was thought to be partially obscured from view by intervening clouds of gas and dust, but these current observations have revealed the innermost depths of the galaxy. “We can now start to map out the region immediately around the black hole,” says Andrew Fabian,...
  • Monster galactic cluster seen in deep Universe: European agency

    08/25/2008 3:56:31 PM PDT · by NormsRevenge · 15 replies · 307+ views
    AFP on Yahoo ^ | 8/25/08 | AFP
    PARIS (AFP) – An orbiting observatory has spotted a massive cluster of galaxies in deep space that can only be explained by the exotic phenomenon known as dark energy, the European Space Agency (ESA) said on Monday. Spotted in a scan by ESA's orbiting X-ray telescope XMM-Newton, the cluster's mass is about 1,000 times that of our own galaxy, the Milky Way, it said. The huge cluster, known by its catalogue number of 2XMM J083026+524133, lies 7.7 billion light years from Earth and helps confirm the existence of dark energy, the agency said. Under this hypothesis, most of the Universe...
  • The Exploding Star That Everyone Missed

    07/28/2008 5:54:42 PM PDT · by SunkenCiv · 14 replies · 93+ views ^ | July 22, 2008 | Staff
    Calculations show that the star's sudden brightness was clearly visible to the naked eye, but no one reported anything until the European Space Agency's XMM-Newton telescope spotted an unexpected burst of cosmic X-rays. On Oct. 9, 2007, XMM-Newton was turning from one target to another when it passed across a bright source of X-rays that no one was expecting. The source was not listed in any previous X-ray catalog, yet the mysterious object was lighting up XMM-Newton's view of the cosmos. The XMM-Newton team looked up three possible celestial candidates as at this location, including a normally faint star known...
  • Gas Blob Resembles Gigantic Comet - largest gas ball of its kind ever detected

    06/12/2006 10:04:27 PM PDT · by NormsRevenge · 9 replies · 662+ views ^ | 6/12/06 | Ker Than
    A ball of gas more massive than a billion suns is hurtling like an enormous comet through the interior of a distant galaxy cluster. The massive structure is held together by mysterious dark matter, astronomers said today, but it is steadily breaking apart and becoming fuel for new stars. "This is likely a massive building block being delivered to one of the largest assembly of galaxies we know," said study team member Alexis Finoguenov of the University of Maryland, Baltimore County. The finding is detailed in the June 6 issue of Astrophysical Journal. Great ball of fire The gas blob...
  • ESA finds a black-hole flywheel in the Milky Way

    04/26/2002 10:28:30 AM PDT · by callisto · 25 replies · 285+ views
    European Space Agency ^ | April 26, 2002 | European Space Agency
    XMM-Newton showed that energy can escape from a black hole Far away among the stars, in the Ara constellation of the southern sky, a small black hole is whirling space around it. If you tried to stay still in its vicinity, you couldn't. You'd be dragged around at high speed as if you were riding on a giant flywheel. In reality, gas falling into the black hole is whirled in that way. It radiates energy, in the form of X-rays, more intensely than it would do if space were still by tapping into the black hole's internal energy stream. ESA's...