Change BAYESTAR low frequency cutoff to 15 Hz
- Apr 23, 2020
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Leo P. Singer authored
Search pipelines do not report their low frequency cutoffs in a uniform, machine readable way in the coinc.xml files. BAYESTAR has been using a default value of 30 Hz. A mismatch in low frequency cutoff will lead to a systematic bias in luminosity distance. In O3, search pipelines used the following low frequency cutoffs: | Pipeline | Cutoff | | ------------------------------------- | ------------------------------ | | gstlal (full bandwidth, stellar mass) | 15 Hz | | gstlal (full bandwidth, IMBH) | 10 Hz | | gstlal (early warning) | 10 Hz | | SPIIR | 15 Hz | | PyCBC | 18-30 Hz depending on template | | MBTA (BNS) | 25 Hz | | MBTA (NSBH) | 23 Hz | | MBTA (BBH) | 21 Hz | 15 Hz is a compromise value that is closer to what the pipelines actually use. A complete solution would be to add an `f_lower` column to the `sngl_inspiral` table so that pipelines can report their low frequency cutoffs. Shikata ga nai.
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