Light and gravitational waves don't arrive simultaneously

Comments

• Chais@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

  Well, space isn’t a perfect vacuum, is it? It’s pretty damn close, but you’ll still encounter the occasional hydrogen molecule.

  source

  • pennomi@lemmy.world ⁨1⁩ ⁨year⁩ ago

    In fact, this might be a good way to measure the average density of loose matter in the universe.

    source

    • Chais@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

      Was thinking about that, too.

      source
    • Fermion@feddit.nl ⁨1⁩ ⁨year⁩ ago

      And if we had enough ligos throughout the solar system, maybe we could even image dark matter distributions.

      source
  • Treczoks@kbin.social ⁨1⁩ ⁨year⁩ ago

    It also depends on the starting point. If both the gravity wave and the light start in the middle of a star or even just inside a shell of an exploding star, or, in case of black holes, inside a cloud of matter that surrounds the hole waiting to be sucked in, there is more than enough matter to delay the light.

    source
• John_Hasler@lemmy.one ⁨1⁩ ⁨year⁩ ago

  They are not emitted simultaneously. The collision is messy. The GRB comes from leftover bits of neutron star.

  source