Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Schnetter, Erik"'
In an attempt to simulate black hole echoes (generated by potential quantum-gravitational structure) in numerical relativity, we recently described how to implement a reflecting boundary outside of the horizon of a black hole in spherical symmetry. H
Externí odkaz:
http://arxiv.org/abs/2409.17970
Autor:
Kalinani, Jay V., Ji, Liwei, Ennoggi, Lorenzo, Armengol, Federico G. Lopez, Sanches, Lucas Timotheo, Tsao, Bing-Jyun, Brandt, Steven R, Campanelli, Manuela, Ciolfi, Riccardo, Giacomazzo, Bruno, Haas, Roland, Schnetter, Erik, Zlochower, Yosef
We present AsterX, a novel open-source, GPU-accelerated, fully general relativistic magnetohydrodynamic (GRMHD) code designed for dynamic spacetimes in 3D Cartesian coordinates, and tailored for exascale computing. We utilize block-structured adaptiv
Externí odkaz:
http://arxiv.org/abs/2406.11669
Autor:
Hammond, Jeff R., Dalcin, Lisandro, Schnetter, Erik, Pérache, Marc, Besnard, Jean-Baptiste, Brown, Jed, Gadeschi, Gonzalo Brito, Schuchart, Joseph, Byrne, Simon, Zhou, Hui
MPI is the most widely used interface for high-performance computing (HPC) workloads. Its success lies in its embrace of libraries and ability to evolve while maintaining backward compatibility for older codes, enabling them to run on new architectur
Externí odkaz:
http://arxiv.org/abs/2308.11214
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:
Curtis, Sanjana, Bosch, Pablo, Mösta, Philipp, Radice, David, Bernuzzi, Sebastiano, Perego, Albino, Haas, Roland, Schnetter, Erik
We present a 3D general-relativistic magnetohydrodynamic simulation of a short-lived neutron star remnant formed in the aftermath of a binary neutron star merger. The simulation uses an M1 neutrino transport scheme to track neutrino-matter interactio
Externí odkaz:
http://arxiv.org/abs/2305.07738
Publikováno v:
Classical and Quantum Gravity, 40, 2023, 195007
Recently, there has been much interest in black hole echoes, based on the idea that there may be some mechanism (e.g., from quantum gravity) that waves/fields falling into a black hole could partially reflect off of an interface before reaching the h
Externí odkaz:
http://arxiv.org/abs/2301.05778
Autor:
Churavy, Valentin, Godoy, William F, Bauer, Carsten, Ranocha, Hendrik, Schlottke-Lakemper, Michael, Räss, Ludovic, Blaschke, Johannes, Giordano, Mosè, Schnetter, Erik, Omlin, Samuel, Vetter, Jeffrey S., Edelman, Alan
The Julia programming language has evolved into a modern alternative to fill existing gaps in scientific computing and data science applications. Julia leverages a unified and coordinated single-language and ecosystem paradigm and has a proven track
Externí odkaz:
http://arxiv.org/abs/2211.02740
Autor:
Shankar, Swapnil, Mösta, Philipp, Brandt, Steven R., Haas, Roland, Schnetter, Erik, de Graaf, Yannick
We present GRaM-X (General Relativistic accelerated Magnetohydrodynamics on AMReX), a new GPU-accelerated dynamical-spacetime general relativistic magnetohydrodynamics (GRMHD) code which extends the GRMHD capability of Einstein Toolkit to GPU-based e
Externí odkaz:
http://arxiv.org/abs/2210.17509
Publikováno v:
Class. Quantum Grav. 38 17LT01 (2021)
We numerically study the algebraic properties of the Weyl tensor through the merger of two non-spinning black holes (BHs). We are particularly interested in the conjecture that for such a vacuum spacetime, which is zeroth-order algebraically general,
Externí odkaz:
http://arxiv.org/abs/2108.04210
We study curvature invariants in a binary black hole merger. It has been conjectured that one could define a quasi-local and foliation independent black hole horizon by finding the level--$0$ set of a suitable curvature invariant of the Riemann tenso
Externí odkaz:
http://arxiv.org/abs/2101.09615