A Search for Yet-Undetected Gravitational-Wave Sources

Document #:

LIGO-T2400155-v2

Document type:

T - Technical notes

Abstract:

NSF-INFN summer fellowship project 2023

Abstract: So far, LIGO and Virgo observed around a hundred gravitational-wave (GW) sources, mostly binary black hole systems. These binaries are characterized by the total mass, a ratio of the component masses, spins, distances, and others. In this report, we studied the properties of these sources and identified the parameter spaces lacking GW detections. We listed examples of the most interesting GW sources that haven’t been detected and analyzed their simulated properties and future detectability. Asymmetric binary systems (small ratio of the component masses), for example, are not well covered by the current detections. In our study, we noticed that the amplitude of the GW signal is lower than the symmetric binary systems. For this reason, we expect that more of them will be detected in the future observing runs with improved interferometer sensitivity. Another interesting remark is the fact that the detected GW signals of binaries with low negative spin are similar to those with high positive ones, making it harder to constrain the actual spin value. In particular, this difference is smaller for low-mass binary systems.

Files in Document:

• Report_Sara.pdf (1.6 MB)

Topics:

• GW source predictions
• Data analysis software
• GW Bursts

Authors:

• Marek Szczepanczyk
• Sergei Klimenko