Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Deppe, Nils"'
Autor:
Deppe, Nils, Foucart, Francois, Bonilla, Marceline S., Boyle, Michael, Corso, Nicholas J., Duez, Matthew D., Giesler, Matthew, Hébert, François, Kidder, Lawrence E., Kim, Yoonsoo, Kumar, Prayush, Legred, Isaac, Lovelace, Geoffrey, Most, Elias R., Moxon, Jordan, Nelli, Kyle C., Pfeiffer, Harald P., Scheel, Mark A., Teukolsky, Saul A., Throwe, William, Vu, Nils L.
We present a discontinuous Galerkin-finite difference hybrid scheme that allows high-order shock capturing with the discontinuous Galerkin method for general relativistic magnetohydrodynamics in dynamical spacetimes. We present several optimizations
Externí odkaz:
http://arxiv.org/abs/2406.19038
Autor:
Mitman, Keefe, Boyle, Michael, Stein, Leo C., Deppe, Nils, Kidder, Lawrence E., Moxon, Jordan, Pfeiffer, Harald P., Scheel, Mark A., Teukolsky, Saul A., Throwe, William, Vu, Nils L.
Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simulations. With this, gravitational wave models and our understanding of the fundamental nature of
Externí odkaz:
http://arxiv.org/abs/2405.08868
Autor:
Chen, Yitian, Boyle, Michael, Deppe, Nils, Kidder, Lawrence E., Mitman, Keefe, Moxon, Jordan, Nelli, Kyle C., Pfeiffer, Harald P., Scheel, Mark A., Throwe, William, Vu, Nils L., Teukolsky, Saul A.
Numerical relativists can now produce gravitational waveforms with memory effects routinely and accurately. The gravitational-wave memory effect contains very low-frequency components, including a persistent offset. The presence of these components v
Externí odkaz:
http://arxiv.org/abs/2405.06197
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
Publikováno v:
Phys. Rev. D 109, 123019 (2024)
Relativistic plasmas around compact objects can sometimes be approximated as being force-free. In this limit, the plasma inertia is negligible and the overall dynamics is governed by global electric currents. We present a novel numerical approach for
Externí odkaz:
http://arxiv.org/abs/2404.01531
Autor:
Clarke, Teagan A., Isi, Maximiliano, Lasky, Paul D., Thrane, Eric, Boyle, Michael, Deppe, Nils, Kidder, Lawrence E., Mitman, Keefe, Moxon, Jordan, Nelli, Kyle C., Throwe, William, Vu, Nils L.
The ringdown portion of a binary black hole merger consists of a sum of modes, each containing an infinite number of tones that are exponentially damped sinusoids. In principle, these can be measured as gravitational-waves with observatories like LIG
Externí odkaz:
http://arxiv.org/abs/2402.02819
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
Autor:
Zhu, Hengrui, Siegel, Harrison, Mitman, Keefe, Isi, Maximiliano, Farr, Will M., Boyle, Michael, Deppe, Nils, Kidder, Lawrence E., Ma, Sizheng, Moxon, Jordan, Nelli, Kyle C., Pfeiffer, Harald P., Scheel, Mark A., Teukolsky, Saul A., Throwe, William, Varma, Vijay, Vu, Nils L.
To accurately perform black hole spectroscopy, it is essential to know which quasinormal modes dominate astrophysical ringdown signals. In this Letter, we present a phenomenological description of the quasinormal modes that are excited in the ringdow
Externí odkaz:
http://arxiv.org/abs/2312.08588
Autor:
Ma, Sizheng, Moxon, Jordan, Scheel, Mark A., Nelli, Kyle C., Deppe, Nils, Bonilla, Marceline S., Kidder, Lawrence E., Kumar, Prayush, Lovelace, Geoffrey, Throwe, William, Vu, Nils L.
Publikováno v:
Phys. Rev. D 109, 124027 (2024)
A fully relativistic three-dimensional Cauchy-characteristic matching (CCM) algorithm is implemented for physical degrees of freedom in a numerical relativity code SpECTRE. The method is free of approximations and can be applied to any physical syste
Externí odkaz:
http://arxiv.org/abs/2308.10361
Autor:
Boschini, Matteo, Gerosa, Davide, Varma, Vijay, Armaza, Cristobal, Boyle, Michael, Bonilla, Marceline S., Ceja, Andrea, Chen, Yitian, Deppe, Nils, Giesler, Matthew, Kidder, Lawrence E., Kumar, Prayush, Lara, Guillermo, Long, Oliver, Ma, Sizheng, Mitman, Keefe, Nee, Peter James, Pfeiffer, Harald P., Ramos-Buades, Antoni, Scheel, Mark A., Vu, Nils L., Yoo, Jooheon
Publikováno v:
Phys.Rev.D 108 (2023) 8, 084015
Numerical-relativity surrogate models for both black-hole merger waveforms and remnants have emerged as important tools in gravitational-wave astronomy. While producing very accurate predictions, their applicability is limited to the region of the pa
Externí odkaz:
http://arxiv.org/abs/2307.03435