Image Details
Observation of Gravitational Waves from the Coalescence of a 2.5–4.5 M ⊙ Compact Object and a Neutron Star
A. G. Abac et al 2024 The Astrophysical Journal Letters 970 .
Caption: Figure 9.
The noise background for the LIGO Livingston observatory collected by the GSTLAL pipeline in offline mode, with the S/N–ξ 2 values of GW230529 overlaid. The test statistic ξ 2 measures signal consistency. The background is collected from templates that are part of the same bin as the template that recovered GW230529 and is consequently the background used to rank GW230529 and calculate its significance. The background distribution has effectively no support at the position of GW230529. The color bar represents the probability of producing a certain S/N and ξ 2 from noise triggers.
© 2024. The Author(s). Published by the American Astronomical Society.