| ... | ... | @@ -41,6 +41,19 @@ |
|
|
|
|4. | [upload2repo.py](https://git.ligo.org/muhammed.saleem/o3siqm-updates/-/blob/master/script/upload2repo.py) |upload the data to `sim` event directories for each event | ||
|
|
|
|
|
|
|
|
|
|
|
|
#### Our understanding of the observed mismatches on the O1/O2 events compared to the data given in the PE release repo:
|
|
|
|
* Our results are based on a recently released version of the `LALSuite` master: with the following git hash: cde08c79 [https://git.ligo.org/lscsoft/lalsuite/-/tags/lalsuite-v6.67]
|
|
|
|
* Runs we compared with are listed here: from the PE sample release repo: https://git.ligo.org/pe/lvc_pe_sample_release/-/tree/master/ Possible uses a `lalinference_o2` branch [ADD Git Hash?]
|
|
|
|
* We notice significant differences between our BBH runs and these runs. We find that some of the spin angles are consistently different. In particular, the behaviour of \phi_JL seems to be consistently "out-of-phase" indicating that this is a change in the spin convention. More than this, , `logL`, `D_L`, `theta_{JN}`, `matched filter snrs` are different. The log BFs show a difference of (maximum) `~ \pm2`
|
|
|
|
* After seeking help from the waveform group we found the following changes recently happened to the LALSuite versions, and those could lead to a difference in the estimates.
|
|
|
|
* The waveforms changed conventions of the frame in which the spin components are specified: the in-plane spin components get rotated by the orbital phase. See https://dcc.ligo.org/LIGO-T1800226 for a summary.
|
|
|
|
* Inconsistencies found on the the definition of polarization angle and angles between J and L, and found some between LAL and the paper arXiv:0810.5336 (mentioned [here](https://git.ligo.org/lscsoft/lalsuite/-/blob/master/lalsimulation/lib/LALSimIMRPhenomP.c#L426). This has been fixed, see the [commit](https://git.ligo.org/lscsoft/lalsuite/-/commit/241bb313c92ffcb8aec56f37bd21b45b47fe49bb#8685376c620e361391063ea46252790c20301a0f). This led to an extra re-shuffeling of polarizations as mentioned [here](https://git.ligo.org/lscsoft/lalsuite/-/blob/master/lalsimulation/lib/LALSimInspiral.c#L1881).
|
|
|
|
* Along with the spin convention changes in LALSimulation, there is another difference from the LALInference distance bugfix. GW170104 is one of the more distant events, where the bug(fix) has an appreciable effect.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
**Misc**
|
|
|
|
|
|
|
|
Archisman's script for reviewing configs: https://ldas-jobs.ligo.caltech.edu/~archisman.ghosh/LVC/TGR-O3/SIQM/config_review.sh |
