Difference: PNComparison (6 vs. 7)

Revision 72012-11-15 - GergelyDebreczeni

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META TOPICPARENT name="CBwaves"

Comparison of CBwaves, Columbia, NR and hybrid waveforms

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Hybrid waveforms

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Ninja2 waveforms are hibrydized and available for comparsion. The plot below shows the /BAM_D11spp50_96.T4.hyb.n2.gwf waveform compare with CBwaves as an example. Parameters are:
  • m1 = m2 = 2.48 Msun
  • ecc = 0.0061
  • D = 11 M
  • s1z = s2z = 0.5
Comparsion is not straightforward because:
  • Initial conditions for the NR simulations are not completely known
  • Have to split hybrid waveforms so get only the NR part
  • There could be (is) a phase shift between the waveforms that has to be checked / modified
 

BT and DD gauges

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  • The use of the BT gauge provides results similar to NR data
  • With the appropriate change of the coordinates the results in the BT and DD gauges can be transformed to each other
  • Unphysical behaviour is excluded if one takes into account the domain of validity of PN and the requirements for energy conservation
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META FILEATTACHMENT attachment="comparsion.jpg" attr="" comment="" date="1352992737" name="comparsion.jpg" path="comparsion.jpg" size="83106" stream="comparsion.jpg" tmpFilename="/usr/tmp/CGItemp3179" user="GergelyDebreczeni" version="1"
META FILEATTACHMENT attachment="comparsion2.jpg" attr="" comment="Hybrid PN comparsion" date="1352992932" name="comparsion2.jpg" path="comparsion2.jpg" size="65300" stream="comparsion2.jpg" tmpFilename="/usr/tmp/CGItemp3149" user="GergelyDebreczeni" version="1"
 
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