The Stochastic Gravitational Wave Background from Close Hyperbolic Encounters of Primordial Black Holes in Dense Clusters

García-Bellido, J.; Jaraba, Santiago; Kuroyanagi, Sachiko

doi:10.2139/ssrn.4010368

Cited by 4 publications

(1 citation statement)

References 75 publications

(90 reference statements)

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“…GW backgrounds. If PBHs contribute to a non-negligible fraction of DM, their binaries generate a detectable GW background (SGWB) [19,396,[399][400][401][402][403], as well as close encounters [404]. Its spectral shape depends on the PBH mass distribution and binary formation channel, with its amplitude comparable or higher than astrophysical sources.…”

Section: Dark Mattermentioning

confidence: 99%

Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics

Caldwell,

Cui,

Guo

et al. 2022

Preprint

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Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific questions about the Universe. In this white paper, we survey the leading early-Universe mechanisms that may produce a detectable signal -including inflation, phase transitions, topological defects, as well as primordial black holes -and highlight the connections to fundamental physics. We review the complementarity with collider searches for new physics, and multimessenger probes of the large-scale structure of the Universe.

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Section: Dark Mattermentioning

confidence: 99%

Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics

Caldwell,

Cui,

Guo

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

Detection of early-universe gravitational-wave signatures and fundamental physics

et al. 2022

View full text Add to dashboard Cite

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific questions about the Universe. In this white paper, we survey the leading early-Universe mechanisms that may produce a detectable signal—including inflation, phase transitions, topological defects, as well as primordial black holes—and highlight the connections to fundamental physics. We review the complementarity with collider searches for new physics, and multimessenger probes of the large-scale structure of the Universe.

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Stochastic Gravitational-Wave Backgrounds: Current Detection Efforts and Future Prospects

et al. 2022

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The collection of individually resolvable gravitational wave (GW) events makes up a tiny fraction of all GW signals that reach our detectors, while most lie below the confusion limit and are undetected. Similarly to voices in a crowded room, the collection of unresolved signals gives rise to a background that is well-described via stochastic variables and, hence, referred to as the stochastic GW background (SGWB). In this review, we provide an overview of stochastic GW signals and characterise them based on features of interest such as generation processes and observational properties. We then review the current detection strategies for stochastic backgrounds, offering a ready-to-use manual for stochastic GW searches in real data. In the process, we distinguish between interferometric measurements of GWs, either by ground-based or space-based laser interferometers, and timing-residuals analyses with pulsar timing arrays (PTAs). These detection methods have been applied to real data both by large GW collaborations and smaller research groups, and the most recent and instructive results are reported here. We close this review with an outlook on future observations with third generation detectors, space-based interferometers, and potential noninterferometric detection methods proposed in the literature.

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The Stochastic Gravitational Wave Background from Close Hyperbolic Encounters of Primordial Black Holes in Dense Clusters

Cited by 4 publications

References 75 publications

Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics

Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics

Detection of early-universe gravitational-wave signatures and fundamental physics

Stochastic Gravitational-Wave Backgrounds: Current Detection Efforts and Future Prospects

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