Difference: PNComparison (4 vs. 5)

Revision 52012-11-15 - GergelyDebreczeni

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META TOPICPARENT name="CBwaves"

Comparison of CBwaves, Columbia, NR and hybrid waveforms

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NR waveforms

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The
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A comparsion with the provided NR waveform is shown here.
 



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Issues:
  • One has to check the "hybridisation" region of NR waveforms. We should exactly know how they were hybridized.
 Domain of validity

Hybrid waveforms

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RR gauges

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The radiation reaction terms at 2.5PN and 3.5PN depends on 2 and 6 parameters, see e.g. IyerWill95. These arbitrary parameters represent the residual gauge freedom in the relative coordinate x=x1-x2 leaving the formulas for energy and angular momentum flux invariant. CBwaves and the code of the Columbia group use different gauges BT and DD. The DD gauge can be easily analyzed within CBwaves. With the appropriate coordinate transformation (applied at 2.5PN order in the figure below) we can change form one system to the other.
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The radiation reaction terms at 2.5PN and 3.5PN depends on 2 and 6 parameters, see e.g. IyerWill95. These arbitrary parameters represent the residual gauge freedom in the relative coordinate x=x1-x2 leaving the formulas for energy and angular momentum flux invariant. CBwaves and the code of the Columbia group use different gauges BT and DD, but CBWaves can also analyize the DD gauge thanks to the built-in and configurable gauge transformation. With the appropriate coordinate transformation (applied at 2.5PN order in the figure below) we can change form one system to the other.
 
 
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