Looking for ancillary signals around GW150914
arXiv:1903.02823 · doi:10.1088/1475-7516/2019/04/007
Abstract
We replicated the procedure in Liu and Jackson (arXiv:1609.08346), who had found evidence for a low amplitude signal in the vicinity of GW150914. This was based upon the large correlation between the time integral of the Pearson cross-correlation coefficient in the off-source region of GW150914, and the Pearson cross-correlation in a narrow window around GW150914, for the same time lag between the two LIGO detectors as the gravitational wave signal. Our results mostly agree with those in arXiv:1609.08346. We find the statistical significance of the observed cross-correlation to be about 2.5 . We also used the cross-correlation method to search for short duration signals at all other physical values of the time lag, within this 4096 second time interval, but do not find evidence for any statistically significant events in the off-source region.
16 pages, 10 figures
References in corpus (13)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Advanced LIGO
- GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
- GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
- Dark Energy after GW170817: dead ends and the road ahead
- Coherent method for detection of gravitational wave bursts
- The LIGO Open Science Center
- Implementing a search for aligned-spin neutron star -- black hole systems with advanced ground based gravitational wave detectors
- Coherent network analysis for triggered gravitational wave burst searches
- On the time lags of the LIGO signals
- Possible associated signal with GW150914 in the LIGO data
- A First Comparison of SLOPE and Other LIGO Burst Event Trigger Generators
- Is GW151226 a really signal of gravitational wave?