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* [ ] comparison of bilby posteriors for GW150914 with exactly the same priors, but one using phase marginalisation and one without.
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* [ ] P-P plots for a waveform model (IMRPhenomXHM?) including (some) higher order modes without using phase marginalised likelihoods. If speed is an issue, maybe hold unimportant parameters (sky positions?) fixed.
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## IMRPhenomPv2 TD vs TDP comparison for GW150914 using parallel bilby
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* [Link to PESummary page](https://ldas-jobs.ligo-wa.caltech.edu/~gregory.ashton/experiments/pbilby_GW150914/run_N/comparison/home.html)
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* Sampling times using 320 cores (20x16) on ozstar (sstar) ~ 2hr for nact=50 ~ 1hr for nact=20 for the TD marginalization.
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* [Link to MR](https://git.ligo.org/lscsoft/parallel_bilby/merge_requests/32) implementing improvement which resolves shredding issue without increasing the runtime too substantially
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## PP tests using IMRPhenomPv2 using serial bilby
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* Results using [bilby0.6.4-4436ec59-CLEAN_bilby_pipe0.3.9-82325e0-CLEAN](https://ldas-jobs.ligo-wa.caltech.edu/~gregory.ashton/bilby_review/bilby0.6.4-4436ec59-CLEAN_bilby_pipe0.3.9-82325e0-CLEAN/)
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### Conclusion: PP tests using IMRPhenomPv2 using serial bilby
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The PP tests indicate that (for the range of SNRs tested), the posteriors are not biased at the level of the test. But, corner plots of high SNR events demonstrate the posteriors are not "clean". They exhibit signs of shredding: a known issue.
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