Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Galley, Chad R."'
Publikováno v:
Phys. Rev. Lett. 122, 211101 (2019)
Gravitational-wave data analysis is rapidly absorbing techniques from deep learning, with a focus on convolutional networks and related methods that treat noisy time series as images. We pursue an alternative approach, in which waveforms are first re
Externí odkaz:
http://arxiv.org/abs/1811.05491
Autor:
Kumar, Prayush, Blackman, Jonathan, Field, Scott E., Scheel, Mark, Galley, Chad R., Boyle, Michael, Kidder, Lawrence E., Pfeiffer, Harald P., Szilagyi, Bela, Teukolsky, Saul A.
Publikováno v:
Phys. Rev. D 99, 124005 (2019)
Gravitational-wave detectors have begun to observe coalescences of heavy black holes at a consistent pace for the past few years. Accurate models of gravitational waveforms are essential for unbiased and precise estimation of source parameters. Recen
Externí odkaz:
http://arxiv.org/abs/1808.08004
Publikováno v:
Phys. Rev. D 96, 084065 (2017)
We compute the leading Post-Newtonian (PN) contributions at quadratic order in the spins to the radiation-reaction acceleration and spin evolution for binary systems, entering at four-and-a-half PN order. Our calculation includes the back-reaction fr
Externí odkaz:
http://arxiv.org/abs/1705.07938
Publikováno v:
Phys. Rev. D 96, 084064 (2017)
We compute the leading Post-Newtonian (PN) contributions at linear order in the spin to the radiation-reaction acceleration and spin evolution for binary systems, which enter at fourth PN order. The calculation is carried out, from first principles,
Externí odkaz:
http://arxiv.org/abs/1705.07934
A Numerical Relativity Waveform Surrogate Model for Generically Precessing Binary Black Hole Mergers
Autor:
Blackman, Jonathan, Field, Scott E., Scheel, Mark A., Galley, Chad R., Ott, Christian D., Boyle, Michael, Kidder, Lawrence E., Pfeiffer, Harald P., Szilágyi, Béla
Publikováno v:
Phys. Rev. D 96, 024058 (2017)
A generic, non-eccentric binary black hole (BBH) system emits gravitational waves (GWs) that are completely described by 7 intrinsic parameters: the black hole spin vectors and the ratio of their masses. Simulating a BBH coalescence by solving Einste
Externí odkaz:
http://arxiv.org/abs/1705.07089
Autor:
Blackman, Jonathan, Field, Scott E., Scheel, Mark A., Galley, Chad R., Hemberger, Daniel A., Schmidt, Patricia, Smith, Rory
Publikováno v:
Phys. Rev. D 95, 104023 (2017)
We present the first surrogate model for gravitational waveforms from the coalescence of precessing binary black holes. We call this surrogate model NRSur4d2s. Our methodology significantly extends recently introduced reduced-order and surrogate mode
Externí odkaz:
http://arxiv.org/abs/1701.00550
Autor:
Galley, Chad R., Schmidt, Patricia
Numerical simulations of merging black hole binaries produce the most accurate gravitational waveforms. The availability of hundreds of these numerical relativity (NR) waveforms, often containing many higher spherical harmonic modes, allows one to st
Externí odkaz:
http://arxiv.org/abs/1611.07529
Autor:
Lackey, Benjamin D., Bernuzzi, Sebastiano, Galley, Chad R., Meidam, Jeroen, Broeck, Chris Van Den
Publikováno v:
Phys. Rev. D 95, 104036 (2017)
Gravitational-wave observations of binary neutron star systems can provide information about the masses, spins, and structure of neutron stars. However, this requires accurate and computationally efficient waveform models that take <1s to evaluate fo
Externí odkaz:
http://arxiv.org/abs/1610.04742
Autor:
Galley, Chad R., Rothstein, Ira Z.
Publikováno v:
Phys. Rev. D 95, 104054 (2017)
We utilize the dynamical renormalization group formalism to calculate the real space trajectory of a compact binary inspiral for long times via a systematic resummation of secularly growing terms. This method generates closed form solutions without o
Externí odkaz:
http://arxiv.org/abs/1609.08268
Publikováno v:
Phys. Rev. D 93, 124010 (2016)
We use the effective field theory (EFT) framework to calculate the tail effect in gravitational radiation reaction, which enters at 4PN order in the dynamics of a binary system. The computation entails a subtle interplay between the near (or potentia
Externí odkaz:
http://arxiv.org/abs/1511.07379