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Articles tagged: event horizon

  • black holes, ergosphere, event horizon, Event Horizon Telescope, rotating black holes 18 January 2021 New study looks at how to harness energy from a black hole

    ... Physical Review, two researchers are suggesting that by breaking and rejoining magnetic field lines near the event horizon, a source of power could in the future be extracted to support the needs of an advanced civilisation. Mining energy from black...

    • black holes
    • ergosphere
    • event horizon
    • Event Horizon Telescope
    • rotating black holes
  • Event Horizon Telescope, jet, M87, magnetic  field, supermassive black hole 24 March 2021 For the first time, astronomers image magnetic fields around M87 black hole

    ... it resist gravity’s pull. Only the gas that slips through the field can spiral inwards to the event horizon,” explains Jason Dexter, Assistant Professor at the University of Colorado Boulder, US, and Coordinator of the EHT Theory Working...

    • Event Horizon Telescope
    • jet
    • M87
    • magnetic field
    • supermassive black hole
  • Event Horizon Telescope, M87, Ring of Fire 10 April 2019 Ring of fire around black hole revealed for first time

    .... Last year ESO’s GRAVITY instrument observed a ring of extremely fast moving material racing around near Sag A*’s event horizon at about 30 percent the speed of light. As tantalising as the observation was, the massive cavernous abyss of the black...

    • Event Horizon Telescope
    • M87
    • Ring of Fire
  • black holes, event horizon, superradiance, wave phenomena 15 June 2017 Black hole 'bath' confirms wave phenomena

    Using water and a generator to create waves, astronomers have been able to gain valuable insights into how a particular phenomena known as superradiance affects particles around a black hole. Rotational superradiance is a technical term for how ...

    • black holes
    • event horizon
    • superradiance
    • wave phenomena
  • black-hole information paradox, echos in gravitational waves, LIGO, Theory of general relativity, ‘No Hair Theorem’ 12 December 2016 Gravitational waves proved Einstein right, now they may help prove him wrong too

    ..., escapes as it is sucked into the beckoning void has been turned on its head in recent decades. Theories from event horizon ‘fuzzballs’ to ‘firewalls’ have been suggested to overcome the lost information problem associated with our classical view...

    • black-hole information paradox
    • echos in gravitational waves
    • LIGO
    • Theory of general relativity
    • ‘No Hair Theorem’
  • 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

    ... ESO’s GRAVITY instrument, a ring of extremely fast moving material has been spotted racing around near its event horizon at about 30 percent the speed of light; this is the most detailed observations yet of material swirling around so close...

    • European Southern Observatory's Very Large Telescope (VLT)
    • GRAVITY instrument
    • Sagittarius A*
    • SINFONI
    • supermassive black hole
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