Gravitational waves from sub-solar mass primordial black holes
arXiv:2404.11601 · doi:10.1007/978-981-97-8887-3_18
Abstract
Gravitational waves from inspiraling sub-solar mass compact objects would provide almost definitive evidence for the existence of primordial black holes. In this chapter, we explain why these exotic objects are interesting candidates for current and future gravitational-wave observatories, and provide detailed explanations of how they are searched for. We describe one method, matched filtering, to search for binaries with masses between . Furthermore, since signals from inspiraling planetary- and asteroid-mass mass compact binaries () would spend hours to years in the detector frequency band, we explain the novel pattern recognition techniques that have been developed to search for them. Finally, we describe extreme mass ratio inspiral (EMRI) systems, and how these will be searched for in future space-based detectors. For all mass regimes, we comment on the prospects for detection.
arXiv commentto appear [with updates] in the book "Primordial Black Holes", ed. Chris Byrnes, Gabriele Franciolini, Tomohiro Harada, Paolo Pani, Misao Sasaki; Springer (2024); 23 pages + references, 11 figures, intended to be a pedagogical review of the field. Questions and comments are welcome!
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