Weakly lensed gravitational waves: Probing cosmic structures with wave-optics features

Savastano, Stefano; Tambalo, Giovanni; Villarrubia-Rojo, Hector; Zumalacárregui, Miguel

doi:10.1103/physrevd.108.103532

Cited by 13 publications

(2 citation statements)

References 80 publications

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“…(f ) Lensing of GWs. Another interesting probe to PBH scenarios using GWs is the recently proposed lensing of GWs [306][307][308]. Lensed GWs might be sensitive to dark matter halos substructure due to frequency dependent wave optic effects, which could probe PBHs as a fraction dark matter in the M ⊙ − 10 5 M ⊙ range [306].…”

Section: Complementary Probesmentioning

confidence: 99%

Gravitational wave constraints on the primordial black hole dominated early universe

Domènech

Lin

Sasaki

2021

J. Cosmol. Astropart. Phys.

105

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We calculate the gravitational waves (GWs) induced by the density fluctuations due to the inhomogeneous distribution of primordial black holes (PBHs) in the case where PBHs eventually dominate and reheat the universe by Hawking evaporation. The initial PBH density fluctuations are isocurvature in nature. We find that most of the induced GWs are generated right after evaporation, when the universe transits from the PBH dominated era to the radiation dominated era and the curvature perturbation starts to oscillate wildly. The strongest constraint on the amount of the produced GWs comes from the big bang nucleosynthesis (BBN). We improve previous constraints on the PBH fraction and find that it cannot exceed 10-4. Furthermore, this maximum fraction decreases as the mass increases and reaches 10-12 for MPBH∼ 5×108 g, which is the largest mass allowed by the BBN constraint on the reheating temperature. Considering that PBH may cluster above a given clustering scale, we also derive a lower bound on the scale of clustering. Interestingly, the GW spectrum for MPBH∼ 104 -108 g enters the observational window of LIGO and DECIGO and could be tested in the future. Although we focus on the PBH dominated early universe in this paper, our methodology is applicable to any model with early isocurvature perturbation.

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Section: Complementary Probesmentioning

confidence: 99%

Gravitational wave constraints on the primordial black hole dominated early universe

Domènech

Lin

Sasaki

2021

J. Cosmol. Astropart. Phys.

105

View full text Add to dashboard Cite

show abstract

“…(f) Lensing of GWs. Another interesting probe to PBH scenarios using GWs is the recently proposed lensing of GWs [322][323][324]. Lensed GWs might be sensitive to dark matter halos substructure due to frequency dependent wave optic effects, which could probe PBHs as a fraction dark matter in the M ⊙ − 10 5 M ⊙ range [322].…”

Section: Complementary Probesmentioning

confidence: 99%

Probing primordial black hole scenarios with terrestrial gravitational wave detectors

Domènech,

Sasaki

2024

Class. Quantum Grav.

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It is possible that primordial black holes constitute (or constituted) a significant fraction of the energy budget of our universe. Terrestrial gravitational wave detectors offer the opportunity to test the existence of primordial black holes in two different mass ranges, from $10^2\,{\rm g}-10^{16}\,{\rm g}$ to $10^{-6}\,M_\odot-100 \,M_\odot$. The first mass window is open via induced gravitational waves, and the second one is by gravitational waves from binary mergers. In this review, we outline and explain the different gravitational wave signatures of primordial black holes that may be probed by terrestrial gravitational wave detectors, such as the current LIGO/Virgo/KAGRA and future ones like Einstein Telescope and Cosmic Explorer. We mainly focus on the associated GW background signals and provide rough estimates for their typical frequency and amplitude. We also discuss complementary probes for these primordial black hole mass ranges.

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Microlensing bias on the detection of strong lensing gravitational wave

Shan,

Chen,

et al. 2024

Sci. China Phys. Mech. Astron.

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Weakly lensed gravitational waves: Probing cosmic structures with wave-optics features

Cited by 13 publications

References 80 publications

Gravitational wave constraints on the primordial black hole dominated early universe

Gravitational wave constraints on the primordial black hole dominated early universe

Probing primordial black hole scenarios with terrestrial gravitational wave detectors

Microlensing bias on the detection of strong lensing gravitational wave

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