Search for black hole hyperbolic encounters with gravitational wave detectors

In recent years, the proposal that there is a large population of primordial black holes living in dense clusters has been gaining popularity. One natural consequence these will be inside gravitationally scatter off each other hyperbolic encounters, emitting gravitational waves can observed by current detectors. this paper we derive how to compute emitted orbits, taking into account up leading order spin effects. We then study signal leave network wave detectors currently on Earth. Using properties signal, detail data processing techniques used make it stand above detector noise. Finally, look for signals from encounters publicly available LIGO-Virgo data. For purpose develop two step trigger. The first trigger based looking correlations between time–frequency domain. second use residual convolutional neural network, trained with theoretical predictions encounters. With find 8 encounter candidates 15.3 days public analyzed. Some are promising, but total number found consistent false alarms expected our