Zobrazeno 1 - 10
of 270
pro vyhledávání: '"Pretorius, Frans"'
We study electromagnetic and gravitational properties of AdS black shells (also referred to as AdS black bubbles) -- a class of quantum gravity motivated black hole mimickers, that in the classical limit are described as ultra compact shells of matte
Externí odkaz:
http://arxiv.org/abs/2405.08062
Autor:
Zhu, Hengrui, Pretorius, Frans, Ma, Sizheng, Owen, Robert, Chen, Yitian, Deppe, Nils, Kidder, Lawrence E., Okounkova, Maria, Pfeiffer, Harald P., Scheel, Mark A., Stein, Leo C.
We numerically investigate the imprints of gravitational radiation-reaction driven changes to a black hole's mass and spin on the corresponding ringdown waveform. We do so by comparing the dynamics of a perturbed black hole evolved with the full (non
Externí odkaz:
http://arxiv.org/abs/2404.12424
Autor:
Zhu, Hengrui, Ripley, Justin L., Pretorius, Frans, Ma, Sizheng, Mitman, Keefe, Owen, Robert, Boyle, Michael, Chen, Yitian, Deppe, Nils, Kidder, Lawrence E., Moxon, Jordan, Nelli, Kyle C., Pfeiffer, Harald P., Scheel, Mark A., Throwe, William, Vu, Nils L.
We investigate quadratic quasinormal mode coupling in black hole spacetime through numerical simulations of single perturbed black holes using both numerical relativity and second-order black hole perturbation theory. Focusing on the dominant $\ell=|
Externí odkaz:
http://arxiv.org/abs/2401.00805
The intricacies of black hole ringdown analysis are amplified by the absence of a complete set of orthogonal basis functions for quasinormal modes. Although damped sinusoids effectively fit the ringdown signals from binary black hole mergers, the ris
Externí odkaz:
http://arxiv.org/abs/2309.13204
Autor:
Pretorius, Frans
We review the state of the field of gravitational wave astrophysics, framing the challenges, current observations, and future prospects within the context of the predictions of Einstein's theory of general relativity.
Comment: 34 pages. To appea
Comment: 34 pages. To appea
Externí odkaz:
http://arxiv.org/abs/2306.03797
Autor:
Yang, Huan, Paschalidis, Vasileios, Yagi, Kent, Lehner, Luis, Pretorius, Frans, Yunes, Nicolás
A binary neutron star coalescence event has recently been observed for the first time in gravitational waves, and many more detections are expected once current ground-based detectors begin operating at design sensitivity. As in the case of binary bl
Externí odkaz:
http://hdl.handle.net/10150/627067
http://arizona.openrepository.com/arizona/handle/10150/627067
http://arizona.openrepository.com/arizona/handle/10150/627067
We present the first numerical analysis of causal, stable first-order relativistic hydrodynamics with ideal gas microphysics, based in the formalism developed by Bemfica, Disconzi, Noronha, and Kovtun (BDNK theory). The BDNK approach provides definit
Externí odkaz:
http://arxiv.org/abs/2209.09265
Autor:
East, William E., Pretorius, Frans
Publikováno v:
Phys. Rev. D 106, 104055 (2022)
Binary neutron star mergers, which can lead to less massive black holes relative to other known astrophysical channels, have the potential to probe modifications to general relativity that arise at smaller curvature scales compared to more massive co
Externí odkaz:
http://arxiv.org/abs/2208.09488
We present the first conservative finite volume numerical scheme for the causal, stable relativistic Navier-Stokes equations developed by Bemfica, Disconzi, Noronha, and Kovtun (BDNK). BDNK theory has arisen very recently as a promising means of inco
Externí odkaz:
http://arxiv.org/abs/2201.12317
We undertake the task of studying the non-linear dynamics of quantum gravity motivated alternatives to black holes that in the classical limit appear as ultra-compact shells of matter. We develop a formalism that should be amenable to numerical solut
Externí odkaz:
http://arxiv.org/abs/2109.09814