Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

I Virgo joins the measurement of gravitational waves

  1. Aug 2, 2017 #1

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    Finally... this month, Virgo and LIGO look for gravitational waves together (they started yesterday). The Virgo detector is a bit less sensitive than the LIGO detectors at the moment, but it is still a big improvement:
    • It is an independent experiment, on a different continent run by different people. A simultaneous detection in all three detectors should remove any remaining doubt on the previous discoveries*.
    • Triangulation of the source needs three detectors. The position estimates will be much more accurate, so it gets easier to look for corresponding signals in the electromagnetic spectrum.
    • The third detector can also give polarization information, that helps constraining more parameters of the source.

    They will run together for just this month. An event this month is certainly possible, but not guaranteed. Let's hope for the best. Afterwards all three detectors will work to improve their sensitivity for the next observation run in fall 2018.

    Article at sciencenews.org


    *personal remark: I'm sure some Danish people will still be surprised that the templates never fit exactly, and write lengthy papers about this.
     
  2. jcsd
  3. Aug 3, 2017 #2

    fresh_42

    Staff: Mentor

    I wonder if the many tremors in Italy wouldn't cause plenty of re-calibration work. I really wondered about the location.
     
  4. Aug 6, 2017 #3
    So, if we're lucky we get a new detection this month, or else we have to wait until fall 2018...
    Those planned upgrades better be worth the year long pause.
     
  5. Aug 6, 2017 #4

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    The design sensitivity is about twice as good as the current one, which means 8 times the detection rate. Running for 8 years now would produce a similar science output as every year will do once they reach the design parameters. What they currently do is more about getting some idea how signals look like and finding some events for the theorists, the main results will be gained once they reach the design sensitivity (planned for 2019, after two rounds of upgrades compared to now).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Virgo joins the measurement of gravitational waves
  1. Gravitational waves (Replies: 10)

  2. Gravitational Waves (Replies: 12)

  3. Gravitational Waves (Replies: 37)

  4. Gravitational Waves (Replies: 6)

Loading...