Comment on “Analysis of Ringdown Overtones in GW150914”
M. Isi, Will M. Farr
Abstract
Cotesta et al. (2022) reanalyze the GW150914 ringdown, arguing against the presence of an overtone and suggesting claims of its detection in Isi et al. (2019) were driven by noise. Here we point out a number of technical errors in that analysis, including a software bug, and show that features highlighted as problematic are in fact expected and encountered in simulated data. After fixes, the code in used in Cotesta et al. (2022) produces results consistent with the presence of the overtone. All code and data are available at https://github.com/maxisi/gw150914_rd_comment
Topics & Concepts
OvertonePhysicsSoftwarePoint (geometry)Noise (video)Code (set theory)Computer scienceUltracold neutronsStatistical physicsComputational physicsQuantum mechanicsSpectral lineMathematicsArtificial intelligenceProgramming languageNeutronGeometryImage (mathematics)Set (abstract data type)High-pressure geophysics and materialsEarthquake Detection and Analysisearthquake and tectonic studies