Zobrazeno 1 - 10
of 198
pro vyhledávání: '"Bruegmann, Bernd"'
Autor:
Neuweiler, Anna, Dietrich, Tim, Brügmann, Bernd, Giangrandi, Edoardo, Kiuchi, Kenta, Schianchi, Federico, Mösta, Philipp, Shankar, Swapnil, Giacomazzo, Bruno, Shibata, Masaru
Binary neutron star mergers are among the most energetic events in our Universe, with magnetic fields significantly impacting their dynamics, particularly after the merger. While numerical-relativity simulations that correctly describe the physics ar
Externí odkaz:
http://arxiv.org/abs/2407.20946
Searching the data of gravitational-wave detectors for signals from compact binary mergers is a computationally demanding task. Recently, machine learning algorithms have been proposed to address current and future challenges. However, the results of
Externí odkaz:
http://arxiv.org/abs/2402.07492
Autor:
Atteneder, Florian, Rüter, Hannes R., Cors, Daniela, Rosca-Mead, Roxana, Hilditch, David, Brügmann, Bernd
Simulations of binary collisions involving compact objects require initial data that satisfy the constraint equations of general relativity. For binary boson star simulations it is common practice to use a superposition of two isolated star solutions
Externí odkaz:
http://arxiv.org/abs/2311.16251
Publikováno v:
Phys. Rev. D 108, 124035 (2023)
The precise tuning required to observe critical phenomena in gravitational collapse poses a challenge for most numerical codes. First, threshold estimation searches may be obstructed by the appearance of coordinate singularities, indicating the need
Externí odkaz:
http://arxiv.org/abs/2308.01812
Autor:
Baumgarte, Thomas W., Brügmann, Bernd, Cors, Daniela, Gundlach, Carsten, Hilditch, David, Khirnov, Anton, Ledvinka, Tomáš, Renkhoff, Sarah, Fernández, Isabel Suárez
Publikováno v:
Phys. Rev. Lett. 131, 181401 (2023)
Fine-tuning generic but smooth spherically-symmetric initial data for general relativity to the threshold of dynamical black hole formation creates arbitrarily large curvatures, mediated by a universal self-similar solution that acts as an intermedia
Externí odkaz:
http://arxiv.org/abs/2305.17171
When a numerical simulation has to handle a physics problem with a wide range of time-dependent length scales, dynamically adaptive discretizations can be the method of choice. We present a major upgrade to the numerical relativity code bamps in the
Externí odkaz:
http://arxiv.org/abs/2302.00575
Autor:
Gonzalez, Alejandra, Zappa, Francesco, Breschi, Matteo, Bernuzzi, Sebastiano, Radice, David, Adhikari, Ananya, Camilletti, Alessandro, Chaurasia, Swami Vivekanandji, Doulis, Georgios, Padamata, Surendra, Rashti, Alireza, Ujevic, Maximiliano, Brügmann, Bernd, Cook, William, Dietrich, Tim, Perego, Albino, Poudel, Amit, Tichy, Wolfgang
Publikováno v:
Class. Quantum Grav. 40 085011 (2023)
We present the second data release of gravitational waveforms from binary neutron star merger simulations performed by the Computational Relativity (CoRe) collaboration. The current database consists of 254 different binary neutron star configuration
Externí odkaz:
http://arxiv.org/abs/2210.16366
Autor:
Schäfer, Marlin B., Zelenka, Ondřej, Nitz, Alexander H., Wang, He, Wu, Shichao, Guo, Zong-Kuan, Cao, Zhoujian, Ren, Zhixiang, Nousi, Paraskevi, Stergioulas, Nikolaos, Iosif, Panagiotis, Koloniari, Alexandra E., Tefas, Anastasios, Passalis, Nikolaos, Salemi, Francesco, Vedovato, Gabriele, Klimenko, Sergey, Mishra, Tanmaya, Brügmann, Bernd, Cuoco, Elena, Huerta, E. A., Messenger, Chris, Ohme, Frank
We present the results of the first Machine Learning Gravitational-Wave Search Mock Data Challenge (MLGWSC-1). For this challenge, participating groups had to identify gravitational-wave signals from binary black hole mergers of increasing complexity
Externí odkaz:
http://arxiv.org/abs/2209.11146
As a first application of the new adaptive mesh functionality of the the pseudospectral numerical relativity code bamps, we evolve twist-free, axisymmetric gravitational waves close to the threshold of collapse. We consider six different one-paramete
Externí odkaz:
http://arxiv.org/abs/2205.04379
Publikováno v:
Phys. Rev. D 106, 024001 (2022)
Numerical relativity simulations are the only way to calculate exact gravitational waveforms from binary neutron star mergers and to design templates for gravitational-wave astronomy. The accuracy of these numerical calculations is critical in quanti
Externí odkaz:
http://arxiv.org/abs/2202.08839