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Articles tagged: accretion disk

  • accretion disk, ALMA, Chile, IRAS 05413-0104, young star 20 April 2017 ALMA research team captures first clear image of accretion disk around a star

    ... radio telescope in Chile is the first clear image of an accretion disk – earlier technology was not able to obtain clear images. ALMA... years old, and take an image of its rotating accretion disk. ALMA, the most expensive radio telescope ever built, ...

    • accretion disk
    • ALMA
    • Chile
    • IRAS 05413-0104
    • young star
  • Active Galactic Nuclei (AGN), black holes, Markarian 231, Northern Extended Millimeter Array Interferometer, Quasar 19 February 2020 Molecular oxygen detected for the first time in another galaxy

    ... their energy from material spiralling in towards an enormous black hole at the center of a galaxy forming a disk called an accretion disk. As the gas and dust spirals closer in, it accelerates and heats through gravitational and frictional forces...

    • Active Galactic Nuclei (AGN)
    • black holes
    • Markarian 231
    • Northern Extended Millimeter Array Interferometer
    • Quasar
  • 23 February 2016 Researchers probe black-hole mergers with fast-powered winds

    ...GRB have already been undertaken, with phenomena such as the afterglow emission of relativistic jets or strong disk winds in super-Eddington accretion disks have been postulated as the cause of this event. In order to shed more light on the turbulent...

  • Gamma ray burst, supermassive black hole, Swift J1644+57, Tidal Disruption Event (TDE), X-ray flare 20 September 2017 A new way to 'weigh' extragalactic black holes

    ... while the remainder gets sucked in. As this material is accreted onto the black hole it can reach a temperature of ... luminosity due to its strong gravitational field and an accretion disk around it," explained Seifina. Seifina and team hope that...

    • Gamma ray burst
    • supermassive black hole
    • Swift J1644+57
    • Tidal Disruption Event (TDE)
    • X-ray flare
  • European Southern Observatory's Very Large Telescope (VLT), GRAVITY instrument, Sagittarius A*, SINFONI, supermassive black hole 31 October 2018 Black hole status of the Milky Way centre confirmed with striking new data

    ...the black hole, but instead is swirling around Sagittarius A*’s accretion disk – a turbulent, spiralling belt of gas, dust and...tremendous sensitivity has allowed us to observe the accretion processes in real time in unprecedented detail." Specifically...

    • European Southern Observatory's Very Large Telescope (VLT)
    • GRAVITY instrument
    • Sagittarius A*
    • SINFONI
    • supermassive black hole
  • binary stars, doublestar systems September 2017 Binary stars and their extraordinary lives

    ... between the two stars. Gas from the wind and bridge accumulates in an accretion disk around Mira B and collisions between rapidly moving particles in the disk produce X-rays. Pic (right): artist’s impression of the binary system. Similarly...

    • binary stars
    • doublestar systems
    Authors: Orsola De Marco     Robert G. Izzard    
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