Stochastic Gravitational Wave Background from PBH-ABH Mergers

Cui, Wenfeng; Huang, Fei; Shu, Jing; Zhao, Yue

doi:10.48550/arxiv.2108.04279

Cited by 3 publications

(4 citation statements)

References 45 publications

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“…A PBH binary could also form through capture in a dense PBH halo, and the details of this clustering of PBHs determine the merging rates [64,65]. Additionally, if a stellar-mass black hole passes by a PBH, it could capture it and form a binary [36]. Finally, PBH binaries could be formed by capture in the galactic center [24].…”

Section: Figmentioning

confidence: 99%

“…Depending on the mass ratio of the two compact objects, mini-EMRIs could last anywhere from O(hours − days) − O(years) in the frequency band of ground-based GW detectors, which would allow signal-to-noise ratio to accumulate over time, as is expected for EMRIs in space-based detectors. A stochastic GW background for the kinds of systems considered in this paper could also exist, but is estimated to be very weak [36], motivating the need to consider individual mini-EMRI systems.…”

mentioning

confidence: 99%

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Searching for Mini Extreme Mass Ratio Inspirals with Gravitational-Wave Detectors

Guo¹,

Miller²

2022

Preprint

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A compact object with a mass O(1 ∼ 1000)M , such as a black hole of stellar or primordial origin or a neutron star, and a much lighter exotic compact object with a subsolar mass could form a non-standard mini extreme mass ratio inspiral (EMRI) and emit gravitational waves within the frequency band of ground-based gravitational-wave detectors. These systems are extremely interesting because detecting them would definitively point to new physics. We study the capability of using LIGO/Virgo to search for mini-EMRIs and find that a large class of exotic compact objects can be probed at current and design sensitivities using a method based on the Hough Transform that tracks quasi power-law signals during the inspiral phase of the mini-EMRI system.

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Section: Figmentioning

confidence: 99%

mentioning

confidence: 99%

Searching for Mini Extreme Mass Ratio Inspirals with Gravitational-Wave Detectors

Guo¹,

Miller²

2022

Preprint

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“…If PBHs exist, these can naturally account for the dark matter or at least explain a fraction of the dark matter abundance [ 22 , 23 , 24 ]. Various studies using the observations of black hole mergers by LIGO/Virgo data are carried out to constrain the PBHs and their abundance [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ], including proposals on how to distinguish a PBH from an astrophysical one [ 37 , 38 ]. Furthermore, several analyses and theoretical calculations are carried out to investigate PHBs for the prospects of future GWs detectors, such as LISA [ 39 , 40 , 41 ] and Einstein telescope (ET) [ 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Search for Sub-Solar Mass Binaries with Einstein Telescope and Cosmic Explorer

Nunes

2022

Entropy

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A possible detection of sub-solar mass ultra-compact objects would lead to new perspectives on the existence of black holes that are not of astrophysical origin and/or pertain to formation scenarios of exotic ultra-compact objects. Both possibilities open new perspectives for better understanding of our universe. In this work, we investigate the significance of detection of sub-solar mass binaries with components mass in the range: 10−2M⊙ up to 1M⊙, within the expected sensitivity of the ground-based gravitational waves detectors of third generation, viz., the Einstein Telescope (ET) and the Cosmic Explorer (CE). Assuming a minimum of amplitude signal-to-noise ratio for detection, viz., ρ=8, we find that the maximum horizon distances for an ultra-compact binary system with components mass 10−2M⊙ and 1M⊙ are 40 Mpc and 1.89 Gpc, respectively, for ET, and 125 Mpc and 5.8 Gpc, respectively, for CE. Other cases are also presented in the text. We derive the merger rate and discuss consequences on the abundances of primordial black hole (PBH), fPBH. Considering the entire mass range [10−2–1]M⊙, we find fPBH<0.70 (<0.06) for ET (CE), respectively.

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“…If PHBs exist, these can naturally account for the dark matter or at least explain a fraction of the dark matter abundance [22][23][24]. Various studies using the observations of black hole mergers by LIGO/Virgo data are carried out to constrain the PBHs and their abundance [25][26][27][28][29][30][31][32][33][34][35], including proposals on how to distinguish a PBH from an astrophysical one [36,37]. Also, several analyses and theoretical calculations are carried out to investigate PHBs for the prospects of future GWs detectors, such as LISA [38,39] and Einstein telescope (ET) [40,41].…”

Section: Introductionmentioning

confidence: 99%

Search for sub-solar mass binaries with Einstein Telescope and Cosmic Explorer

Nunes

2021

Preprint

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A possible detection of sub-solar mass ultra-compact objects would lead to new perspectives on the existence of black holes that are not of astrophysical origin and/or pertain to formation scenarios of exotic ultra-compact objects. Both possibilities open new perspectives for better understanding of our universe. In this work, we investigate the significance of detection of sub-solar mass binaries with components mass in the range: 10 −2 M up to 1M , within the expected sensitivity of the ground-based gravitational waves detectors of third-generation, viz., the Einstein Telescope (ET) and the Cosmic Explorer (CE). Assuming a minimum of amplitude signal-to-noise ratio for detection, viz., ρ = 8, we find that the maximum horizon distances for an ultra-compact binary system with components mass 10 −2 M and 1M are 40 Mpc and 1.89 Gpc, respectively, for ET, and 125 Mpc and 5.8 Gpc, respectively, for CE. Other cases are also presented in the text. We derive the merger rate, and discuss consequences on the abundances of primordial black hole (PBH), fPBH. Considering the entire mass range [10 −2 -1]M , we find fPBH < 0.70 (< 0.06) for ET (CE), respectively.

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Stochastic Gravitational Wave Background from PBH-ABH Mergers

Cited by 3 publications

References 45 publications

Searching for Mini Extreme Mass Ratio Inspirals with Gravitational-Wave Detectors

Searching for Mini Extreme Mass Ratio Inspirals with Gravitational-Wave Detectors

Search for Sub-Solar Mass Binaries with Einstein Telescope and Cosmic Explorer

Search for sub-solar mass binaries with Einstein Telescope and Cosmic Explorer

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