Effect of Noise Estimation in Time-Domain Ringdown Analysis: A Case Study with GW150914

Understand

Accurate noise estimation from gravitational wave (GW) data is critical for Bayesian inference.

• However, recent studies on ringdown signal, such as those by Isi et al.
• [1], Cotesta et al.
• [2], and Isi and Farr [3], have encountered disagreement in noise estimation, leading to inconsistent results.