Analysis of Ringdown Overtones in GW150914
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Documents
- PhysRevLett.129.111102
Final published version, 906 KB, PDF document
We analyze GW150914 postmerger data to understand if ringdown overtone detection claims are robust. We find no evidence in favor of an overtone in the data after the waveform peak. Around the peak, the Bayes factor does not indicate the presence of an overtone, while the support for a nonzero amplitude is sensitive to changes in the starting time much smaller than the overtone damping time. This suggests that claims of an overtone detection are noise dominated. We perform GW150914-like injections in neighboring segments of the real detector noise, and we show that noise can indeed induce artificial evidence for an overtone.
Original language | English |
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Article number | 111102 |
Journal | Physical Review Letters |
Volume | 129 |
Issue number | 11 |
Number of pages | 7 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 9 Sep 2022 |
- COLLAPSING RELATIVISTIC STARS, GRAVITATIONAL-WAVES, RADIATION
Research areas
Links
- https://arxiv.org/pdf/2201.00822.pdf
Submitted manuscript
ID: 323158675