Possible associated signal with GW150914 in the LIGO data

Abstract

We present a simple method for the identification of weak signals associated with gravitational wave events. Its application reveals a signal with the same time lag as the GW150914 event in the released LIGO strain data with a significance around $3.2\sigma$. This signal starts about 10 minutes before GW150914 and lasts for about 45 minutes. Subsequent tests suggest that this signal is likely to be due to external sources.

arXiv comment5 pages, 4 figures

References in corpus (7)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• The Sensitivity of the Advanced LIGO Detectors at the Beginning of Gravitational Wave Astronomy
• Fermi GBM Observations of LIGO Gravitational Wave event GW150914
• AGILE Observations of the Gravitational Wave Event GW150914
• Understanding the LIGO GW150914 event
• Is the GW150914-GBM really associated with the GW150914?
• Do we expect to detect electromagnetic radiation from merging stellar mass black binaries like GW150914? No

Cited by in corpus (7)

• A blind search for a common signal in gravitational wave detectors
• Investigating the noise residuals around the gravitational wave event GW150914
• Degeneracy of gravitational waveforms in the context of GW150914
• Convenient filtering techniques for LIGO strain of the GW150914 event
• Looking for ancillary signals around GW150914
• Pearson cross-correlation in the first four black hole binary mergers
• A new measure for the comparison of signals without templates and the detection of gravitational polarization in the GW150914 event