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All event comparisons for known events are stored in the [bilby_pe_event_samples repo](https://git.ligo.org/gregory.ashton/bilby_pe_event_samples).
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## Prior
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These events are analysed using a prior that is flat in chirp mass and mass ratio. In order to compare against the LALInference results, which use a prior that is flat in component masses, we utilise the Jacobian given in eq. 21 of [Vietch et al (2015)](https://arxiv.org/pdf/1409.7215.pdf):
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```
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weights = np.square(bilby_posterior['mass_1']) / bilby_posterior['chirp_mass']
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```
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## Waveforms interface
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Note: the `phi_jl` posteriors are not expected to agree as the L.I. GWTC1 results (against which bilby is compared) used the older version of the waveform interface (see https://git.ligo.org/lscsoft/bilby/issues/385 for a discussion). The reviewers (Matt Pitkin and Simon Stevenson) have been involved in this discussion and have signed of: see https://git.ligo.org/lscsoft/bilby/issues/392.
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## Comparison with LALInference
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We compare all results using the IMRPhenomPv2 analyses performed for GWTC1. Separate comparisons are made with the Nest and MCMC runs done by L.I.
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## Results
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| event | comments | links | review status |
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| ------ | ------ | ------ | ------ |
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| GW150914 | | [LI comparison plots](https://ldas-jobs.ligo.caltech.edu/~cbc/pe/bilby_lalinference_comparison/GW150914/nest_vs_mcmc_vs_bilby/home.html) | review-ready|
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