Gravitational energy
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Gravitational memory, BMS supertranslations and soft theorems Open
The transit of a gravitating radiation pulse past arrays of detectors stationed near future null infinity in the vacuum is considered. It is shown that the relative positions and clock times of the detectors before and after the radiation …
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The Quest for B Modes from Inflationary Gravitational Waves Open
The search for the curl component (B mode) in the cosmic microwave background (CMB) polarization induced by inflationary gravitational waves is described. The canonical single-field slow-roll model of inflation is presented, and we explain…
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Gravitational waves from vacuum first-order phase transitions: From the envelope to the lattice Open
Movie based on Figure 2 of the paper Gravitational waves from vacuum first-order phase transitions: from the envelope to the lattice [arXiv:1802.05712]. This movie originally appeared as Supplemental Material associated with the paper. Cap…
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Effect of gravitational lensing on the distribution of gravitational waves from distant binary black hole mergers Open
The detailed observation of the distribution of redshifts and chirp masses of\nbinary black hole mergers is expected to provide a clue to their origin. In\nthis paper, we develop a hybrid model of the probability distribution function\nof …
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Vorticity, Kinetic Energy, and Suppressed Gravitational-Wave Production in Strong First-Order Phase Transitions Open
We have performed the first three-dimensional simulations of strong first-order thermal phase transitions in the early universe. For deflagrations, we find that the rotational component of the fluid velocity increases as the transition str…
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Energy-limited escape revised Open
Gas planets in close proximity to their host stars experience photoevaporative mass loss. The energy-limited escape concept is generally used to derive estimates for the planetary mass-loss rates. Our photoionization hydrodynamics simulati…
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Second-Order Self-Force Calculation of Gravitational Binding Energy in Compact Binaries Open
Self-force theory is the leading method of modeling extreme-mass-ratio inspirals (EMRIs), key sources for the gravitational-wave detector LISA. It is well known that for an accurate EMRI model, second-order self-force effects are critical,…
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First 100 ms of a long-lived magnetized neutron star formed in a binary neutron star merger Open
The recent multimessenger observation of the short gamma-ray burst (SGRB) GRB\n170817A together with the gravitational wave (GW) event GW170817 provides\nevidence for the long-standing hypothesis associating SGRBs with binary neutron\nstar…
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Gravitational Bremsstrahlung in the post-Minkowskian effective field theory Open
We study the gravitational radiation emitted during the scattering of two\nspinless bodies in the post-Minkowskian Effective Field Theory approach. We\nderive the conserved stress-energy tensor linearly coupled to gravity and the\nclassica…
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Gravitational-Wave Luminosity of Binary Neutron Stars Mergers Open
We study the gravitational-wave peak luminosity and radiated energy of quasicircular neutron star mergers using a large sample of numerical relativity simulations with different binary parameters and input physics. The peak luminosity for …
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Gravitational-Wave Energy Flux for Compact Binaries through Second Order in the Mass Ratio Open
Within the framework of self-force theory, we compute the gravitational-wave energy flux through second order in the mass ratio for compact binaries in quasicircular orbits. Our results are consistent with post-Newtonian calculations in th…
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Testing the Speed of Gravitational Waves over Cosmological Distances with Strong Gravitational Lensing Open
Probing the relative speeds of gravitational waves and light acts as an important test of general relativity and alternative theories of gravity. Measuring the arrival time of gravitational waves (GWs) and electromagnetic (EM) counterparts…
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Gravitational wave signatures of ultralight vector bosons from black hole superradiance Open
In the presence of an ultralight bosonic field, spinning black holes are\nunstable to superradiance. The rotational energy of the black hole is converted\ninto a non-axisymmetric, oscillating boson cloud which dissipates through the\nemiss…
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Gravitational wave production by Hawking radiation from rotating primordial black holes Open
In this paper we analyze in detail a rarely discussed question of gravity wave production from evaporating primordial black holes. These black holes emit gravitons which are, at classical level, registered as gravity waves. We use the late…
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Ultralight boson cloud depletion in binary systems Open
Ultralight scalars can extract rotational energy from astrophysical black holes through superradiant instabilities, forming macroscopic boson clouds. This process is most efficient when the Compton wavelength of the boson is comparable to …
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Potential of Radio Telescopes as High-Frequency Gravitational Wave Detectors Open
In the presence of magnetic fields, gravitational waves are converted into photons and vice versa. We demonstrate that this conversion leads to a distortion of the cosmic microwave background (CMB), which can serve as a detector for MHz to…
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Evolution of a proto-neutron star with a nuclear many-body equation of state: Neutrino luminosity and gravitational wave frequencies Open
In a core-collapse supernova, a huge amount of energy is released in the Kelvin-Helmholtz phase subsequent to the explosion, when the proto-neutron star cools and deleptonizes as it loses neutrinos. Most of this energy is emitted through n…
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The turbulent pressure support in galaxy clusters revisited Open
Due to their late formation in cosmic history, clusters of galaxies are not fully in hydrostatic equilibrium and the gravitational pull of their mass at a given radius is expected not to be entirely balanced by the thermal gas pressure. Tu…
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The soft $ \\mathcal{S} $-matrix in gravity Open
The gravitational $ \\mathcal{S}$-matrix defined with an infrared (IR) cutoff factorizes into hard and soft factors. The soft factor is universal and contains all the IR and collinear divergences. Here we show, in a momentum space basis, t…
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Extracting the Gravitational Recoil from Black Hole Merger Signals Open
Gravitational waves carry energy, angular momentum, and linear momentum. In generic binary black hole mergers, the loss of linear momentum imparts a recoil velocity, or a "kick," to the remnant black hole. We exploit recent advances in gra…
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Black Hole Kicks as New Gravitational Wave Observables Open
Generic black hole binaries radiate gravitational waves anisotropically, imparting a recoil, or kick, velocity to the merger remnant. If a component of the kick along the line of sight is present, gravitational waves emitted during the fin…
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Accretion disks around black holes in scalar-tensor-vector gravity Open
Scalar Tensor Vector Gravity (STVG) is an alternative theory of gravitation\nthat has successfully explained the rotation curves of nearby galaxies, the\ndynamics of galactic clusters, and cosmological data without dark matter, but\nhas ha…
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Efficient computation of the gravitational wave spectrum emitted by eccentric massive black hole binaries in stellar environments Open
We present a fast and versatile method to calculate the characteristic\nspectrum $h_c$ of the gravitational wave background (GWB) emitted by a\npopulation of eccentric massive black hole binaries (MBHBs). We fit the\nspectrum of a referenc…
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Secular dimming of KIC 8462852 following its consumption of a planet Open
The Kepler-field star KIC 8462852, an otherwise apparently ordinary F3\nmain-sequence star, showed several highly unusual dimming events of variable\ndepth and duration. Adding to the mystery was the discovery that KIC 8462852\nfaded by 14…
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Massive outflows driven by magnetic effects in star-forming clouds with high mass accretion rates Open
The relation between the mass accretion rate onto the circumstellar disc and\nthe rate of mass ejection by magnetically driven winds is investigated using\nthree-dimensional magnetohydrodynamics simulations. Using a spherical cloud\ncore w…
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The signal of the gravitational wave background and the angular correlation of its energy density Open
The gravitational wave radiation emitted by all, resolved and unresolved,\nastrophysical sources in the observable universe generates a stochastic\nbackground. This background has a directional dependence inherited from the\ninhomogeneitie…
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Probing gravitational parity violation with gravitational waves from stellar-mass black hole binaries Open
The recent discovery of gravitational wave events has offered us unique testbeds of gravity in the strong and dynamical field regime. One possible modification to General Relativity is the gravitational parity violation that gives rise to …
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Gravitational lensing of gravitational waves: wave nature and prospects for detection Open
We discuss the gravitational lensing of gravitational wave (GW) signals from coalescing binaries. We delineate the regime where wave effects are significant from the regime where geometric limit can be used. Further, we focus on the effect…
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Impact of multiple modes on the black-hole superradiant instability Open
Ultralight bosonic fields in the mass range $\sim (10^{-20}-10^{-11})\,{\rm eV}$ can trigger a superradiant instability that extracts energy and angular momentum from an astrophysical black hole with mass $M\sim(5,10^{10})M_\odot$, forming…
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Search for high-energy neutrinos from gravitational wave event GW151226 and candidate LVT151012 with ANTARES and IceCube Open
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