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

Bondi radiatiang line element

  1. May 4, 2014 #1
    Some knows how to Bondi deduce his radiating line element? I read some papers and there isn't any hint about hit.

    Best regards
  2. jcsd
  3. May 4, 2014 #2


    User Avatar
    Science Advisor

  4. May 4, 2014 #3
    Thanks of your time with this question. My problem is that Bondi metric has de following form:

    [itex]ds^2= (\frac{V}{r} e^{2\beta}-U^2r^2e^{2\gamma})du^2 + 2e^{2\beta} dudr+ 2Ur^2 e^{2\gamma} du d\theta -r^2 (e^{2\gamma} d\theta^2 + e^{-2 \gamma} sin^2 \theta d \phi^2) [/itex]

    All these g01,g00,... are function of u,r,θ. And the form of these coeficients is to preserve the signature and for later convenience, as came on his paper http://rspa.royalsocietypublishing.org/content/269/1336/21 . But it is not clear about the chosen form, and I couldn´t understand how he derived this coeficients.

    Wiht best regards.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook