☆ 4.6 Article

EMRIs around j=1 black holes with synchronised hair

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2023)

Related references

Note: Only part of the references are listed.

Article Physics, Multidisciplinary

Perturbations of Spinning Black Holes beyond General Relativity: Modified Teukolsky Equation

Dongjun Li et al.

Summary: The detection of gravitational waves from compact binary mergers by the LIGO/Virgo Collaboration has enabled tests of relativistic gravity in the strong, dynamical, and nonlinear regime. This study focuses on spinning black holes and proposes a modified Teukolsky equation to describe their merger and ringdown. The research extends the analysis to different types of black hole backgrounds in modified gravity and explores the possibility of computing gravitational waves emitted by extreme mass-ratio binary inspirals.

PHYSICAL REVIEW X (2023)

Add to Collection

Article Astronomy & Astrophysics

Bayesian parameter estimation on boson-star binary signals with a coherent inspiral template and spin-dependent quadrupolar corrections

Massimo Vaglio et al.

Summary: Compact boson-star binaries could serve as hypothetical sources for ground-based and space gravitational-wave detectors, providing insights into novel fundamental fields and the nature of dark matter. This study further expands on previous analysis to constrain the properties of these objects through future observations. By utilizing a coherent waveform template, this work explores the inspiral stage of boson-star binaries with large quartic self-interactions, considering tidal deformability and the nonlinear dependence of quadrupole moments on spin in terms of fundamental couplings in scalar field theory. Through Bayesian analysis, the ability of a third-generation gravitational-wave detector, such as the Einstein Telescope, to distinguish these exotic sources from black holes and derive constraints on the fundamental couplings of the model is investigated.

PHYSICAL REVIEW D (2023)

Add to Collection

Article Astronomy & Astrophysics

Solving the Teukolsky equation with physics-informed neural networks

Raimon Luna et al.

Summary: We use physics-informed neural networks (PINNs) to compute the first quasinormal modes of the Kerr geometry via the Teukolsky equation, providing accurate oscillation frequencies and damping times for black holes. The PINN-computed quasinormal modes are indistinguishable from existing methods at high signal-to-noise ratios (SNRs), making them reliable for gravitational-wave data analysis in the mid term. This technique may continue to be useful until the arrival of third-generation detectors with higher SNRs.

PHYSICAL REVIEW D (2023)

Add to Collection

Article Astronomy & Astrophysics

A bound on energy extraction (and hairiness) from superradiance

Carlos A. R. Herdeiro et al.

Summary: Research on extracting rotational energy from black holes suggests that the maximum energy extraction efficiency may be limited to around 0.10, regardless of the spin of the bosonic field.

PHYSICS LETTERS B (2022)

Add to Collection

Article Astronomy & Astrophysics

Detecting fundamental fields with LISA observations of gravitational waves from extreme mass-ratio inspirals

Andrea Maselli et al.

Summary: This article reports on the Laser Interferometer Space Antenna (LISA)'s capability to detect the presence of a scalar field in extreme mass-ratio inspirals (EMRIs) and measure the scalar charge of the compact object. The results demonstrate that LISA can detect and measure the scalar charge with an unprecedented level of precision, reaching an accuracy of approximately one percent.

NATURE ASTRONOMY (2022)

Add to Collection

Article Physics, Multidisciplinary

Gravitational Waves from Extreme-Mass-Ratio Systems in Astrophysical Environments

Vitor Cardoso et al.

Summary: This article introduces a generic, fully relativistic formalism for studying gravitational-wave emission by extreme-mass-ratio systems in black hole spacetimes, and explores its potential applications to different astrophysical setups and the impact on the generation and propagation of gravitational waves, providing insights into understanding galactic potential, accretion, and other factors.

PHYSICAL REVIEW LETTERS (2022)

Add to Collection

Article Astronomy & Astrophysics

Exploring the small mass limit of stationary black holes in theories with Gauss-Bonnet terms

Pedro G. S. Fernandes et al.

Summary: This work examines the small mass limit of black holes in theories with a scalar field non-minimally coupled to a Gauss-Bonnet term, finding in most cases an inner singularity overlaps with the event horizon, potentially leading to a naked singularity through evaporation. A coupling example where the small mass limit is never reached is provided, offering insights from the perspective of cosmic censorship.

CLASSICAL AND QUANTUM GRAVITY (2022)

Add to Collection

Article Astronomy & Astrophysics

Approach to computing spectral shifts for black holes beyond Kerr

Asad Hussain et al.

Summary: Recent measurements of gravitational-wave ringdown provide new possibilities for precise black hole spectroscopy in the future. It is crucial to compute deviations in the spectrum of black holes in specific extensions of relativity in order to perform sensitive tests of their nature. Here, we present a method for calculating the spectrum shifts of Kerr black holes with arbitrary spins in theories beyond general relativity, and show how to use eigenvalue perturbation methods to compute the leading-order spectral shifts. Our approach offers a practical way to predict the ringdown of black holes in various promising extensions to relativity, enabling precision searches for their signatures.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Epicyclic frequencies for a generic ultracompact object

Jorge F. M. Delgado

Summary: This paper investigates the stability of light rings and timelike circular orbits in spacetimes generated by objects with specific symmetries. The study shows that the stability of the light rings determines the stability of the surrounding orbits, and a relation between the oscillation frequencies and the Ricci tensor is found.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Constraining gravitational wave amplitude birefringence and Chern-Simons gravity with GWTC-2

Maria Okounkova et al.

Summary: In this study, a new test of general relativity was performed using signals from the LIGO and Virgo catalog of gravitational wave detections, revealing the presence of amplitude birefringence. The constrained amount of amplitude birefringence was determined through data analysis, with statistically significant results compared to an uninformative distribution. Additionally, the results were used to constrain Chern-Simons gravity, a beyond-GR theory with motivations in quantum gravity.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Equatorial timelike circular orbits around generic ultracompact objects

Jorge F. M. Delgado et al.

Summary: This study focuses on the structure of timelike circular orbits (TCOs) near equatorial light rings (LRs) for stationary, axisymmetric, asymptotically flat, ultracompact objects with Z(2) north-south symmetry. The results show that the radial stability of LRs exclusively determines the structure of TCOs, suggesting potential applications for horizonless ultracompact objects and black holes.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Fate of observers in circular motion

Antoine Lehebel et al.

Summary: This article investigates the influence of energy dissipation on the stability of orbits for massive test particles, revealing that the same effect exists in any theory of gravity that respects the weak equivalence principle. It demonstrates an intimate relationship between the energy of a particle and the stability of its orbit. Additionally, a toy metric is constructed to display an unbound innermost stable circular orbit, allowing particles on this orbit to be expelled away.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Constraints on Einstein-dilation-Gauss-Bonnet gravity from black hole-neutron star gravitational wave events

Zhenwei Lyu et al.

Summary: In this paper, the authors focus on testing the Einstein-dilation Gauss-Bonnet gravity theory using recent gravitational wave observations. They derive upper bounds on the coupling constant of the theory by analyzing neutron star black hole binaries and binary black hole events. The authors also investigate the impact of higher-order corrections to the waveform phase on the bounds.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Equatorial extreme-mass-ratio inspirals in Kerr black holes with scalar hair spacetimes

Lucas G. Collodel et al.

Summary: In this work, we analyze the solutions of Kerr black holes with scalar hair that are of special interest for extreme mass ratio inspirals (EMRIs) in gravitational wave events. The off-center distribution of energy density in these spacetimes causes nonmonotonic behavior in the metric functions, which has a significant impact on the orbital parameters and signals from EMRIs. By investigating circular orbit parameters, we identify qualitative features in the signals that are distinct from Kerr black holes, and we simulate inspirals using the quadrupole formula approximation. We find that the emitted signal frequencies exhibit nonmonotonic behavior, including backward chirp, and can fall below the sensitivity range of LISA in some cases. Additionally, we present waveforms of a noncircular EMRI where the compact object follows a geodesic motion typically associated with spacetimes containing a static ring.

PHYSICAL REVIEW D (2022)

Add to Collection

Article Astronomy & Astrophysics

Circular Orbit Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair

Lucas G. Collodel et al.

Summary: This paper investigates the equatorial circular orbit structure of Kerr black holes with scalar hair (KBHsSH) and compares the results of solutions with the same spin parameter but different normalized charges. The prominent features of these solutions, arising from the combined bound system of a hole with an off-center, self-gravitating distribution of scalar matter, are highlighted. Furthermore, the existence of a conserved scalar charge leads to nonuniqueness in the parameter space.

ASTROPHYSICAL JOURNAL (2021)

Add to Collection

Article Astronomy & Astrophysics

Retrograde polish doughnuts around boson stars

Matheus C. Teodoro et al.

Summary: The study investigates the unique features of Polish doughnuts in the space-times of rotating boson stars, showing the possibility of static surfaces for retrograde thick tori with the presence of a static ring. This characteristic is not present in Kerr space-times.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2021)

Add to Collection

Article Physics, Multidisciplinary

Gravitational Wave Glitches in Chaotic Extreme-Mass-Ratio Inspirals

Kyriakos Destounis et al.

Summary: The Kerr geometry with Carter symmetry ensures integrability of geodesic equations. Gravitational waveforms from extreme-mass-ratio inspirals involving a nonintegrable compact object exhibit glitch phenomena when crossing certain spacetime regions known as Birkhoff islands, providing a potential test for both general relativity and fundamental spacetime symmetries in data from upcoming space-borne detectors.

PHYSICAL REVIEW LETTERS (2021)

Add to Collection

Article Physics, Multidisciplinary

GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo during the First Half of the Third Observing Run

R. Abbott et al.

Summary: This report presents 39 candidate gravitational-wave events detected by Advanced LIGO and Advanced Virgo during the first half of the third observing run (O3a) between April 1, 2019 and October 1, 2019. The events include black hole binary mergers up to a redshift of approximately 0.8 and events where the components cannot be unambiguously identified. The range of candidate event masses has expanded compared to previous catalogs, with the inclusion of binary systems with asymmetric mass ratios.

PHYSICAL REVIEW X (2021)

Add to Collection

Article Astronomy & Astrophysics

Thick toroidal configurations around scalarized Kerr black holes

M. C. Teodoro et al.

Summary: This work investigates thick tori configurations around Kerr black holes with scalar hair (KBHsSH) using non-selfgravitating Polish doughnuts, showing the feasibility of new topologies and highlighting differences with standard Kerr black holes and rotating boson stars.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Magnetized accretion disks around Kerr black holes with scalar hair: Nonconstant angular momentum disks

Sergio Gimeno-Soler et al.

Summary: The study presents new equilibrium solutions of stationary models of magnetized thick disks around Kerr black holes with synchronized scalar hair, extending previous results significantly. The effect of scalar hair on black hole spacetime leads to significant differences in disk morphology and properties compared to purely Kerr spacetime. Some tori built within black hole spacetime with scalar hair exhibit two maxima in gravitational energy density distribution, impacting the radial profile distributions of the disk's thermodynamical quantities.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Extreme mass-ratio inspirals around a spinning horizonless compact object

Elisa Maggio et al.

Summary: This study focuses on extreme mass-ratio inspirals (EMRIs) detectable by the Laser Interferometer Space Antenna, providing a unique probe into the nature of supermassive compact objects. The gravitational fluxes exhibit resonances corresponding to the low-frequency quasinormal modes of the central object, significantly influencing the gravitational-wave phase, and the absence of a classical event horizon in the central object can lead to dramatic deviations in the gravitational-wave signal.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Improved gravitational-wave constraints on higher-order curvature theories of gravity

Scott E. Perkins et al.

Summary: By observing gravitational waves from compact binaries, researchers can test general relativity and its modifications in strong and dynamic gravitational fields. The study compared two extensions to general relativity, dynamical Chern-Simons and Einstein-dilaton-Gauss-Bonnet theories, and strengthened constraints on the coupling parameter in the latter theory. The results also showed the robustness of the constraints to various factors such as waveform models and uncertainties in the nature of compact objects.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Tight constraints on Einstein-dilation-Gauss-Bonnet gravity from GW190412 and GW190814

Hai-Tian Wang et al.

Summary: Gravitational-wave data can be used to test modified gravity theories, with dynamical Chern-Simons gravity remaining unconstrained and constraints on Einstein-dilation-Gauss-Bonnet gravity parameters improved by a factor of approximately 10 based on GW190814 data.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Tests of general relativity with binary black holes from the second LIGO-Virgo gravitational-wave transient catalog

R. Abbott et al.

Summary: Gravitational waves are used to test general relativity in strong-field regimes, with evaluations of data consistency showing no evidence for new physics beyond general relativity. Modifying waveform parameters and constraints on Lorentz-violating coefficients have improved past limitations, while analysis of merger remnants and polarization confirms agreement with theoretical predictions.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Physics, Multidisciplinary

Stationary Black Holes and Light Rings

Pedro V. P. Cunha et al.

PHYSICAL REVIEW LETTERS (2020)

Add to Collection

Article Physics, Particles & Fields

Black holes with synchronised Proca hair: linear clouds and fundamental non-linear solutions

Nuno M. Santos et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

Add to Collection

Article Astronomy & Astrophysics

Rotating axion boson stars

Jorge F. M. Delgado et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2020)

Add to Collection

Editorial Material Astronomy & Astrophysics

Prospects for fundamental physics with LISA

Enrico Barausse et al.

GENERAL RELATIVITY AND GRAVITATION (2020)

Add to Collection

Article Physics, Multidisciplinary

Detecting Scalar Fields with Extreme Mass Ratio Inspirals

Andrea Maselli et al.

PHYSICAL REVIEW LETTERS (2020)

Add to Collection

Article Astronomy & Astrophysics

Gravitational-wave detectors as particle-physics laboratories: Constraining scalar interactions with a coherent inspiral model of boson-star binaries

Costantino Pacilio et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Astronomy & Astrophysics

Gravitational-wave constraints on an effective-field-theory extension of general relativity

Noah Sennett et al.

PHYSICAL REVIEW D (2020)

Add to Collection

Article Physics, Multidisciplinary

Tests of General Relativity with GW170817

B. P. Abbott et al.

PHYSICAL REVIEW LETTERS (2019)

Add to Collection

Article Physics, Multidisciplinary

GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs

B. P. Abbott et al.

PHYSICAL REVIEW X (2019)

Add to Collection

Article Physics, Multidisciplinary

Fundamental Physics Implications for Higher-Curvature Theories from Binary Black Hole Signals in the LIGO-Virgo Catalog GWTC-1

Remya Nair et al.

PHYSICAL REVIEW LETTERS (2019)

Add to Collection

Article Astronomy & Astrophysics

EHT Constraint on the Ultralight Scalar Hair of the M87 Supermassive Black Hole

Pedro V. P. Cunha et al.

UNIVERSE (2019)

Add to Collection

Article Astronomy & Astrophysics

Constraining extra gravitational wave polarizations with Advanced LIGO, Advanced Virgo, and KAGRA and upper bounds from GW170817

Yuki Hagihara et al.

PHYSICAL REVIEW D (2019)

Add to Collection

Article Astronomy & Astrophysics

Tests of general relativity with the binary black hole signals from the LIGO-Virgo catalog GWTC-1

B. P. Abbott et al.

PHYSICAL REVIEW D (2019)

Add to Collection

Article Physics, Multidisciplinary

Static Orbits in Rotating Spacetimes

Lucas G. Collodel et al.

PHYSICAL REVIEW LETTERS (2018)

Add to Collection

Article Physics, Multidisciplinary

Scalar Hairy Black Holes in Four Dimensions are Unstable

Bogdan Ganchev et al.

PHYSICAL REVIEW LETTERS (2018)

Add to Collection

Article Astronomy & Astrophysics

Effective stability against superradiance of Kerr black holes with synchronised hair

Juan Carlos Degollado et al.

PHYSICS LETTERS B (2018)

Add to Collection

Article Physics, Multidisciplinary

Light-Ring Stability for Ultracompact Objects

Pedro V. P. Cunha et al.

PHYSICAL REVIEW LETTERS (2017)

Add to Collection

Article Physics, Multidisciplinary

Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories

Jeremy Sakstein et al.

PHYSICAL REVIEW LETTERS (2017)

Add to Collection

Article Physics, Multidisciplinary

Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A

T. Baker et al.

PHYSICAL REVIEW LETTERS (2017)

Add to Collection

Article Astronomy & Astrophysics

Augmented kludge waveforms for detecting extreme-mass-ratio inspirals

Alvin J. K. Chua et al.

PHYSICAL REVIEW D (2017)

Add to Collection

Article Astronomy & Astrophysics

Constraining black holes with light boson hair and boson stars using epicyclic frequencies and quasiperiodic oscillations

Nicola Franchini et al.

PHYSICAL REVIEW D (2017)

Add to Collection

Article Astronomy & Astrophysics

Kerr black holes with Proca hair

Carlos Herdeiro et al.

CLASSICAL AND QUANTUM GRAVITY (2016)

Add to Collection

Article Astronomy & Astrophysics

Shadows of Kerr black holes with and without scalar hair

Pedro V. P. Cunha et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D (2016)

Add to Collection

Article Astronomy & Astrophysics

Iron Kα line of Kerr black holes with scalar hair

Yueying Ni et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2016)

Add to Collection

Article Physics, Multidisciplinary

Tests of General Relativity with GW150914

B. P. Abbott et al.

PHYSICAL REVIEW LETTERS (2016)

Add to Collection

Article Astronomy & Astrophysics

Theoretical physics implications of the binary black-hole mergers GW150914 and GW151226

Nicolas Yunes et al.

PHYSICAL REVIEW D (2016)

Add to Collection

Article Astronomy & Astrophysics

Construction and physical properties of Kerr black holes with scalar hair

Carlos Herdeiro et al.

CLASSICAL AND QUANTUM GRAVITY (2015)

Add to Collection

Article Physics, Multidisciplinary

Shadows of Kerr Black Holes with Scalar Hair

Pedro V. P. Cunha et al.

PHYSICAL REVIEW LETTERS (2015)

Add to Collection

Article Astronomy & Astrophysics

A new spin on black hole hair

Carlos A. R. Herdeiro et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D (2014)

Add to Collection

Article Physics, Multidisciplinary

Kerr Black Holes with Scalar Hair

Carlos A. R. Herdeiro et al.

PHYSICAL REVIEW LETTERS (2014)

Add to Collection

Article Astronomy & Astrophysics

New constraint on scalar Gauss-Bonnet gravity and a possible explanation for the excess of the orbital decay rate in a low-mass x-ray binary

Kent Yagi

PHYSICAL REVIEW D (2012)

Add to Collection

Article Astronomy & Astrophysics

Testing Chern-Simons modified gravity with gravitational-wave detections of extreme-mass-ratio binaries

Priscilla Canizares et al.

PHYSICAL REVIEW D (2012)

Add to Collection

Article Astronomy & Astrophysics

Gravitational waves from extreme mass-ratio inspirals in dynamical Chern-Simons gravity

Paolo Pani et al.

PHYSICAL REVIEW D (2011)

Add to Collection

Review Astronomy & Astrophysics

Extreme- and intermediate-mass ratio inspirals in dynamical Chern-Simons modified gravity

Carlos F. Sopuerta et al.

PHYSICAL REVIEW D (2009)

Add to Collection

Article Astronomy & Astrophysics

Kludge gravitational waveforms for a test-body orbiting a Kerr black hole

Stanislav Babak et al.

PHYSICAL REVIEW D (2007)

Add to Collection

Article Astronomy & Astrophysics

Mapping spacetimes with LISA: inspiral of a test body in a 'quasi-Kerr' field

Kostas Glampedakis et al.

CLASSICAL AND QUANTUM GRAVITY (2006)

Add to Collection

Article Astronomy & Astrophysics

Gravitational-wave signature of an inspiral into a supermassive horizonless object

M Kesden et al.

PHYSICAL REVIEW D (2005)

Add to Collection

Article Astronomy & Astrophysics

Approximating the inspiral of test bodies into Kerr black holes

K Glampedakis et al.

PHYSICAL REVIEW D (2002)

Add to Collection

Article Astronomy & Astrophysics

Zoom and whirl: Eccentric equatorial orbits around spinning black holes and their evolution under gravitational radiation reaction

K Glampedakis et al.

PHYSICAL REVIEW D (2002)

Add to Collection

© Peeref 2019-2024. All rights reserved.