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April 10-13 MBTA results
by
Frederique Marion
—
last modified
2009-04-15 19:20
This page summarizes the main results obtained by online MBTA during the quiet period of the Easter lock.
MBTA ran online during WSR11, over a mass range from 1 to 3 solar masses. The initial frequency of the search was 80 Hz. The main results are summarized in the following figures.
The time evolution of the triggers SNR and of the trigger rate is shown here:The SNR and chi2 vs SNR distributions are shown here:
The spectrum of the MBTA triggers SNR fluctuations over the full run, which shows the characteristic frequencies of the non-stationarities impacting the inspiral search, is shown here:
The strong lines at 210 and 420 mHz that were present during WSR11 and especially WSR12 are not seen anymore, presumably thanks to the work done on the BS longitudinal control.
The list of triggers with SNR greater than 10 is given in this table:
| GPS | SNR | QScan | Comment | |||
| 923457022.070 | 81.6 | here | ??? | |||
| 923692558.912 | 48.4 | here | Seismic noise in central building, right before the unlock | |||
| 923470502.676 | 32.7 | here | Looks like a "WI glitch" from the step in h(t) | |||
| 923692537.483 | 16.4 | here | Seismic noise in central building | |||
| 923649745.749 | 16.0 | here | Disturbance in BS_txCorr (due to seismic noise in central building?) | |||
| 923509743.684 | 12.6 | here | Seismic noise in mode-cleaner building? | |||
| 923600630.876 | 11.5 | here | ??? | |||
| 923524101.918 | 10.8 | here | Seismic noise in central and NE buildings? |