Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Khera, Neev"'
Quadratic quasinormal modes encode fundamental properties of black hole spacetimes. They are also one of the key ingredients of nonlinearities of General Relativity in the ringdown stage of binary black hole coalescence. In this work, we classify all
Externí odkaz:
http://arxiv.org/abs/2410.14529
Autor:
Ashtekar, Abhay, Khera, Neev
Publikováno v:
JHEP01 (2024) 085
In a companion paper we introduced the notion of asymptotically Minkowski spacetimes. These space-times are asymptotically flat at both null and spatial infinity, and furthermore there is a harmonious matching of limits of certain fields as one appro
Externí odkaz:
http://arxiv.org/abs/2311.14190
Autor:
Ashtekar, Abhay, Khera, Neev
Publikováno v:
JHEP02(2024)210
The Spi framework provides a 4-dimensional approach to investigate the asymptotic properties of gravitational fields as one recedes from isolated systems in any space-like direction, without reference to a Cauchy surface. It is well suited to unify d
Externí odkaz:
http://arxiv.org/abs/2311.14130
Autor:
Khera, Neev, Metidieri, Ariadna Ribes, Bonga, Béatrice, Forteza, Xisco Jiménez, Krishnan, Badri, Poisson, Eric, Pook-Kolb, Daniel, Schnetter, Erik, Yang, Huan
Publikováno v:
Phys. Rev. Lett. 131, no.23, 231401 (2023)
The gravitational waves emitted by a perturbed black hole ringing down are well described by damped sinusoids, whose frequencies are those of quasinormal modes. Typically, first-order black hole perturbation theory is used to calculate these frequenc
Externí odkaz:
http://arxiv.org/abs/2306.11142
Autor:
Chen, Yitian, Kumar, Prayush, Khera, Neev, Deppe, Nils, Dhani, Arnab, Boyle, Michael, Giesler, Matthew, Kidder, Lawrence E., Pfeiffer, Harald P., Scheel, Mark A., Teukolsky, Saul A.
We construct the covariantly defined multipole moments on the common horizon of an equal-mass, non-spinning, quasicircular binary-black-hole system. We see a strong correlation between these multipole moments and the gravitational waveform. We find t
Externí odkaz:
http://arxiv.org/abs/2208.02965
In a companion paper we showed that the symmetry group $\mathfrak{G}$ of non-expanding horizons (NEHs) is a 1-dimensional extension of the Bondi-Metzner-Sachs group $\mathfrak{G}$ at $\mathcal{I}^{+}$. For each infinitesimal generator of $\mathfrak{G
Externí odkaz:
http://arxiv.org/abs/2112.05608
Publikováno v:
JHEP 01 028 (2022)
It is well-known that blackhole and cosmological horizons in equilibrium situations are well-modeled by non-expanding horizons (NEHs). In the first part of the paper we introduce multipole moments to characterize their geometry, removing the restrict
Externí odkaz:
http://arxiv.org/abs/2111.07873
Autor:
Zertuche, Lorena Magaña, Mitman, Keefe, Khera, Neev, Stein, Leo C., Boyle, Michael, Deppe, Nils, Hébert, François, Iozzo, Dante A. B., Kidder, Lawrence E., Moxon, Jordan, Pfeiffer, Harald P., Scheel, Mark A., Teukolsky, Saul A., Throwe, William, Vu, Nils
Publikováno v:
Phys. Rev. D 105, 104015 (2022)
Quasi-normal mode (QNM) modeling is an invaluable tool for characterizing remnant black holes, studying strong gravity, and testing GR. Only recently have QNM studies begun to focus on multimode fitting to numerical relativity (NR) strain waveforms.
Externí odkaz:
http://arxiv.org/abs/2110.15922
Publikováno v:
Phys. Rev. D104, 124071 (2021)
The anticipated enhancements in detector sensitivity and the corresponding increase in the number of gravitational wave detections will make it possible to estimate parameters of compact binaries with greater accuracy assuming general relativity(GR),
Externí odkaz:
http://arxiv.org/abs/2107.09536
Autor:
Mitman, Keefe, Khera, Neev, Iozzo, Dante A. B., Stein, Leo C., Boyle, Michael, Deppe, Nils, Kidder, Lawrence E., Moxon, Jordan, Pfeiffer, Harald P., Scheel, Mark A., Teukolsky, Saul A., Throwe, William
Publikováno v:
Phys. Rev. D 104, 024051 (2021)
Understanding the Bondi-Metzner-Sachs (BMS) frame of the gravitational waves produced by numerical relativity is crucial for ensuring that analyses on such waveforms are performed properly. It is also important that models are built from waveforms in
Externí odkaz:
http://arxiv.org/abs/2105.02300