Growth of accretion driven scalar hair around Kerr black holes

Bamber, Jamie; Clough, Katy; Ferreira, Pedro G.; Hui, Lam; Lagos, Macarena

doi:10.1103/physrevd.103.044059

Cited by 37 publications

(30 citation statements)

References 88 publications

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“…6. Once the initial PBH has formed, the PBH accretes DM from its surroundings in the growth phase at a rate that depends on the steepness of the potential and the density of the surrounding DM "scalar cloud" [118][119][120][121]. In general and regardless of the details of the parameters, we find that the initial accretion rate is much higher than the linear theory prediction of δρ DM /ρ DM ∝ a, as mentioned above.…”

Section: Pbh Growth and Final Massmentioning

confidence: 44%

Primordial black hole formation with full numerical relativity

de Jong,

Aurrekoetxea,

Lim

2021

Preprint

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We study the formation of black holes from subhorizon and superhorizon perturbations in a matter dominated universe with 3+1D numerical relativity simulations. We find that there are two primary mechanisms of formation depending on the initial perturbation's mass and geometry -via direct collapse of the initial overdensity and via post-collapse accretion of the ambient dark matter. In particular, for the latter case, the initial perturbation does not have to satisfy the hoop conjecture for a black hole to form. In both cases, the duration of the formation the process is around a Hubble time, and the initial mass of the black hole isPl . Post formation, we find that the PBH undergoes rapid mass growth beyond the self-similar limit MBH ∝ H −1 , at least initially. We argue that this implies that most of the final mass of the PBH is accreted from its ambient surroundings post formation.

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Section: Pbh Growth and Final Massmentioning

confidence: 44%

Primordial black hole formation with full numerical relativity

de Jong,

Aurrekoetxea,

Lim

2021

Preprint

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show abstract

“…Nevertheless, with its efficient scalability and AMR capabilities, it can also play a leading role in the continuing efforts to simulate "standard" binary mergers to the required sensitivities required for the upcoming LISA space mission (Radia et al, 2021). Finally, GRChombo's object-oriented and template-based code can be rapidly modified for non-standard problems such as higher-dimensional spacetimes (Andrade et al, 2020;Bantilan et al, 2019;Figueras et al, 2016Figueras et al, , 2017, modified gravity systems (Figueras & França, 2020) and additional fundamental fields (Alexandre & Clough, 2018;Bamber et al, 2021;Clough, Dietrich, et al, 2018;Clough et al, 2019;Dietrich et al, 2019;Helfer et al, 2017;Muia et al, 2019;Nazari et al, 2021;Widdicombe et al, 2020).…”

Section: Statement Of Needmentioning

confidence: 99%

“…• the study of light bosonic dark matter and neutrino-like particles in black holes environments (Alexandre & Clough, 2018;Bamber et al, 2021;Clough et al, 2019;Traykova et al, 2021).…”

Section: Key Research Projects Using Grchombomentioning

confidence: 99%

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GRChombo: An adaptable numerical relativity code for fundamental physics

Andrade¹,

Saló²,

Aurrekoetxea³

et al. 2021

JOSS

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“…• Extrapolating -both zeroth and first order schemes (by radial distance from a central point). These are especially useful for variables which asymptote to a spatially uniform but time varying value (see [102][103][104]). • Sommerfeld/radiative -these permit (massless) outgoing radiation to leave the grid without reflections by assuming a solution of the form ϕ = ϕ 0 + u(r − t)/r at the boundaries, where u can be any arbitrary function and ϕ 0 is a constant asymptotic value (see section 5.9 of [27]).…”

Section: Berger-rigoutsos Amrmentioning

confidence: 99%

Lessons for adaptive mesh refinement in numerical relativity

Radia,

Sperhake,

Drew

et al. 2021

Preprint

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We demonstrate the flexibility and utility of the Berger-Rigoutsos Adaptive Mesh Refinement (AMR) algorithm used in the open-source numerical relativity code GRChombo for generating gravitational waveforms from binary black-hole inspirals, and for studying other problems involving non-trivial matter configurations. We show that GRChombo can produce high quality binary black-hole waveforms through a code comparison with the established numerical relativity code Lean. We also discuss some of the technical challenges involved in making use of full AMR (as opposed to, e.g. moving box mesh refinement), including the numerical effects caused by using various refinement criteria when regridding. We suggest several "rules of thumb" for when to use different tagging criteria for simulating a variety of physical phenomena. We demonstrate the use of these different criteria through example evolutions of a scalar field theory. Finally, we also review the current status and general capabilities of GRChombo.

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Growth of accretion driven scalar hair around Kerr black holes

Cited by 37 publications

References 88 publications

Primordial black hole formation with full numerical relativity

Primordial black hole formation with full numerical relativity

GRChombo: An adaptable numerical relativity code for fundamental physics

Lessons for adaptive mesh refinement in numerical relativity

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