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Comparison of CBwaves with NR, hybrid and Columbia waveforms

RMKI Virgo group (Hungary, Budapest)

Both CBwaves and the code of the Columbia group developed by Janna Levin use the PN equations to describe the evolution and the emitted waveforms of binary systems. The main differences in the applied approximation can be summarized as:

  • Equations of motion
    - PN terms: PN, 2PN, 3PN are identical
    - Spin terms: SO (PN-SO), SS (PN-SS), RRSO (3.5PN-SO), RRSS (3.5PN-SS) are identical
    in the latest verion of CBwaves we have included the 1PN correction to the SO term: PNSO (2PN-SO) which gives non negligible contribution
    - Radiation reaction: use of BT (CBwaves) and DD (Columbia) gauges at 2.5PN and 3.5PN
  • Spin precession
    In addition to the usual SO and SS terms CBwaves contains the 1PN correction to the SO term in spin precession
  • Waveform
    In CBwaves all the contributions from the leading 2.5PN order quadruplole term up to 4.5PN are included.

NR waveforms


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Topic revision: r3 - 2012-11-14 - MatyasVasuth
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