Detectability of gravitational waves from the coalescence of massive primordial black holes with initial clustering

Ding, Qianhang; Nakama, Tomohiro; Silk, Joseph; Wang, Yi

doi:10.1103/physrevd.100.103003

Cited by 28 publications

(29 citation statements)

References 114 publications

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“…[35][36][37][38]. Primordial non-Gaussianity can strongly change the initial clustering of PBHs [39][40][41][42][43] and the subsequent merger rate [44] (see also [45]).…”

Section: Intrinsic Merger Rate From Pbhsmentioning

confidence: 99%

Primordial black hole merger rates: distributions for multiple LIGO observables

Gow

Byrnes

Hall

et al. 2020

J. Cosmol. Astropart. Phys.

116

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We have calculated the detectable merger rate of primordial black holes, as a function of the redshift, as well as the binary's mass ratio, total mass and chirp mass (observables that have not previously been explored in great detail for PBHs). We consider both the current and design sensitivity of LIGO and five different primordial black hole mass functions, as well as showing a comparison to a predicted astrophysical black hole merger rate. We show that the empirical preference for nearly equal-mass binaries in current LIGO/Virgo data can be consistent with a PBH hypothesis once observational selection effects are taken into account. However, current data do exclude some PBH mass distributions, and future data may be able to rule out the possibility that all observed BH mergers had a primordial origin.

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“…[35][36][37][38]. Primordial non-Gaussianity can strongly change the initial clustering of PBHs [39][40][41][42][43] and the subsequent merger rate [44] (see also [45]).…”

Section: Intrinsic Merger Rate From Pbhsmentioning

confidence: 99%

Primordial black hole merger rates: distributions for multiple LIGO observables

Gow

Byrnes

Hall

et al. 2020

J. Cosmol. Astropart. Phys.

116

View full text Add to dashboard Cite

show abstract

“…While, for the very light PBHs (M ≤ 10 15 g), their Hawking radiation can be strong [27,28] and have already evaporated, the Hawking-radiated particles may influence physical processes in the early Universe, like Big Bang Nucleosynthesis [29][30][31]. Meanwhile, with the dramatic developments of GW experiments, a lot of attentions focus on the GW signals coming from PBHs associated with the binary mergers [18,20,[32][33][34][35] and scalar perturbations [36][37][38][39][40][41][42][43][44][45][46][47][48][49]. In summary, PBHs can be a promising needle to detect physics in the early and late Universe.…”

Section: Pbh Bubblesmentioning

confidence: 99%

“…In usual cases, PBHs are regarded as individual isolated objects in the Universe, however, there are many scenarios for clustering of PBHs at some certain scales. If the sizes of these regions are small enough, say, smaller than the resolutions of current telescopes, they behave as exotic celestial objects, i.e., the PBH bubbles [20,21]. Generally speaking, these stellar bubbles can be generated from some new-physics phenomena that might have occurred in the primordial Universe, such as, quantum tunnelings during or after inflation [50,51], multi-stream inflation [19,52,53], inhomogeneous baryogenesis [54], etc.…”

Section: Pbh Bubblesmentioning

confidence: 99%

“…In this paper, we discuss an explicit model of the standard timer, i.e., primordial stellar bubbles consisting of primordial black holes (PBHs) in tracking the evolution of the Universe. The PBH stellar bubbles can be generated from some primordial physics, such as multi-stream inflation [19,20], which causes a number of PBHs clustering in specific regions. Its primordial origin produces the same PBH mass functions inside PBH stellar bubbles.…”

Section: Introductionmentioning

confidence: 99%

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Cosmological Standard Timers from Unstable Primordial Relics

Cai¹,

Chen²,

Ding³

et al. 2021

Preprint

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In this article we study a hypothetical possibility of tracking the evolution of our Universe by introducing a series of the so-called standard timers. Any unstable primordial relics generated in the very early Universe may serve as the standard timers, as they can evolve through the whole cosmological background until their end while their certain time-varying properties could be a possible timer by recording the amount of physical time elapsed since the very early moments. Accordingly, if one could observe these quantities at different redshifts, then a redshift-time relation of the cosmic history can be attained. To illustrate such a hypothetical possibility, we consider the primordial black hole bubbles as a concrete example and analyze the mass function inside a redshifted bubble by investigating the inverse problem of Hawking radiation. To complete the analyses theoretically, the mass distribution can serve as a calibration of the standard timers.

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“…1) can be different. The difference can be responsible for position space anomalies of the universe, such as power asymmetries on the CMB [10,18], clustered production of primordial black holes [19] and stellar bubbles [20]. And correlation between the bifurcation scale and the local environments introduce non-Gaussianities [10,21].…”

Section: Introductionmentioning

confidence: 99%

Lattice Simulation of Multi-Stream Inflation

Cai,

Jiang,

Wang

2021

Preprint

Self Cite

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We present the first lattice simulation to investigate the nature of multi-stream inflation. The simulation confirms the physical picture of multi-stream inflation, and with new findings in parameter space and field behaviors. Our simulation shows that gradient energy plays a significant role in multi-stream inflation. For a double field potential with a shifted Gaussian barrier, bifurcation probability is controlled by the shift distance with an error function relation. The bubbles created by bifurcation tend to be more spherical as bifurcation probability decreases. Also, the bifurcation is more likely to introduce oscillations of field values inside the bubbles than outside.

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Detectability of gravitational waves from the coalescence of massive primordial black holes with initial clustering

Cited by 28 publications

References 114 publications

Primordial black hole merger rates: distributions for multiple LIGO observables

Primordial black hole merger rates: distributions for multiple LIGO observables

Cosmological Standard Timers from Unstable Primordial Relics

Lattice Simulation of Multi-Stream Inflation

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