Year: 2022
Type: article
Abstract: 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.
Source: Physical Review Letters
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, National Aeronautics and Space Administration, Villum Fonden, Maryland Advanced Research Computing Center, European Commission, National Research Foundation, Danmarks Grundforskningsfond, Horizon 2020 Framework Programme, Fundação para a Ciência e a Tecnologia, HORIZON EUROPE Marie Sklodowska-Curie Actions
Awards: G1299739531, Physics and Astrophysics of Compact Binaries, G1656094705, G2120565986, Gravidade no Centro Galáctico, Metodologias avançadas de extração de ondas na relatividade numérica e na astronomia de ondas gravitacionais., G3205860120, Collaborative Research: Understanding Compact Binary Formation with the First Gravitational Wave Detections, G4279068983, G434337789, G4448422848, G4490303832, Gravitational Universe: Challenges and Opportunities, G4826464759, Centro de Astrofísica e Gravitação, G5454278309, G5994749408, G6070766847, G7374984698
OpenAlex ID: W4295073686