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Articles tagged: white dwarf

  • exoplanet, white dwarf 04 December 2019 Giant planet found orbiting a white dwarf for the first time

    ... to exist in our galaxy. However, until now, scientists had never found evidence of a surviving giant planet around a white dwarf. “It was one of those chance discoveries,” says researcher Boris Gänsicke, from the University of Warwick in the UK, who...

    • exoplanet
    • white dwarf
  • double degenerate, Gaia second data release, Type 1a supernova, white dwarf, white dwarf mergers 02 May 2018 Astronomers spot fastest stars in the galaxy with Gaia

    ...up by further observations with ground-based instruments, three sources were consistent with having previously been white-dwarf companions (to other white dwarfs) before at least one of them exploded as a Type Ia. Aside from speed, the team were also...

    • double degenerate
    • Gaia second data release
    • Type 1a supernova
    • white dwarf
    • white dwarf mergers
  • ESA’s XMM-Newton, IRAS 00500+6713, J005311, supernova, white dwarf 11 January 2021 Strange star unlike any seen before, scientists say

    ...another intriguing property of its central star; X-rays. Despite no longer undergoing nuclear fusion reactions in their cores, white dwarfs can still produce x-rays by siphoning off material from a nearby companion star. As this captured matter falls...

    • ESA’s XMM-Newton
    • IRAS 00500+6713
    • J005311
    • supernova
    • white dwarf
  • Albert Einstein, Lense-Thirring effect, pulsars, Theory of general relativity, white dwarf 31 January 2020 Einsteins prediction of 'draggable' space-time confirmed by stellar binary system

    ... perspective. “After ruling out a range of potential experimental errors, we started to suspect that the interaction between the white dwarf and neutron star was not as simple as had been assumed to date,’ says Willem van Straten a co-author...

    • Albert Einstein
    • Lense-Thirring effect
    • pulsars
    • Theory of general relativity
    • white dwarf
  • debris disk, M31N 2008-12a, Type 1a supernova, white dwarf 18 February 2019 Gigantic remnant found around an exploding star

    ... leach off material from its neighbour to such a degree that the piled on gas will cause the white dwarf to explode as a nova once it reaches a critical mass. The dramatic and sudden energies created ejects material into...

    • debris disk
    • M31N 2008-12a
    • Type 1a supernova
    • white dwarf
  • binary stars, SDSS 1557, Tatooine planet, University College London (UCL), white dwarf 01 March 2017 Researchers find first evidence for rocky planet formation around double stars

    ...case, the stars in question consist of a white dwarf and a brown dwarf roughly 1000 light-years away in a system ... around the double stars and is flowing onto the surface of the white dwarf, equates to an asteroid at least 4 kilometres in size and is...

    • binary stars
    • SDSS 1557
    • Tatooine planet
    • University College London (UCL)
    • white dwarf
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