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Spacetime Diagrams

  1. Dec 27, 2005 #1
    Hi. Does anyone know what the spacetime diagram of a binary star system would look like? thanks
    pic would be great

    blumfeld0
     
  2. jcsd
  3. Dec 27, 2005 #2

    James R

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    With 2 space axes (corresponding to the orbital plane) and 1 time axis, it would look roughly like a double-helix (like a DNA spiral).
     
  4. Dec 28, 2005 #3
    Thanks for your reply. How do you come to that conclusion?
    thanks again

    blumfeld0
     
  5. Dec 29, 2005 #4

    James R

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    Well, the two stars orbit around a common centre of mass. Their orbits are elliptical and periodic. If you graph the orbits without the time axis, you get two overlapping ellipses. Adding time as another axis turns the ellipses into spirals.

    How much do you know about spacetime diagrams?
     
  6. Dec 30, 2005 #5

    tony873004

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    like this?
    [​IMG]
     
  7. Jan 2, 2006 #6
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