Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Rashti, Alireza"'
Autor:
Zhu, Hengrui, Fields, Jacob, Zappa, Francesco, Radice, David, Stone, James, Rashti, Alireza, Cook, William, Bernuzzi, Sebastiano, Daszuta, Boris
We present the numerical relativity module within AthenaK, an open source performance-portable astrophysics code designed for exascale computing applications. This module employs the Z4c formulation to solve the Einstein equations. We demonstrate its
Externí odkaz:
http://arxiv.org/abs/2409.10383
Autor:
Rashti, Alireza, Noe, Andrew
This work introduces the Elliptica pseudo-spectral code for generating initial data of binary neutron star systems. Building upon the recent Elliptica code update, we can now construct initial data using not only piecewise polytropic equations of sta
Externí odkaz:
http://arxiv.org/abs/2407.01701
Autor:
Albanesi, Simone, Rashti, Alireza, Zappa, Francesco, Gamba, Rossella, Cook, William, Daszuta, Boris, Bernuzzi, Sebastiano, Nagar, Alessandro, Radice, David
We study initially unbound systems of two black holes using numerical relativity (NR) simulations performed with GR-Athena++. We focus on regions of the parameter space close to the transition from scatterings to dynamical captures, considering equal
Externí odkaz:
http://arxiv.org/abs/2405.20398
Autor:
Rashti, Alireza, Bhattacharyya, Maitraya, Radice, David, Daszuta, Boris, Cook, William, Bernuzzi, Sebastiano
Publikováno v:
Class. Quantum Grav. 41 095001 (2024)
We discuss refinement criteria for the Berger-Rigoutsos (block-based) refinement algorithm in our numerical relativity code GR-Athena++ in the context of binary black hole merger simulations. We compare three different strategies: the "box-in-box" ap
Externí odkaz:
http://arxiv.org/abs/2312.05438
Autor:
Gamba, Rossella, Breschi, Matteo, Bernuzzi, Sebastiano, Nagar, Alessandro, Cook, William, Doulis, Georgios, Fabbri, Francesco, Ortiz, Néstor, Poudel, Amit, Rashti, Alireza, Tichy, Wolfgang, Ujevic, Maximiliano
Gravitational wave astronomy pipelines rely on template waveform models for searches and parameter estimation purposes. For coalescing binary neutron stars (BNS), such models need to accurately reproduce numerical relativity (NR) up to merger, in ord
Externí odkaz:
http://arxiv.org/abs/2307.15125
Interpreting gravitational wave observations and understanding the physics of astrophysical compact objects such as black holes or neutron stars requires accurate theoretical models. Here, we present a new numerical relativity computer program, calle
Externí odkaz:
http://arxiv.org/abs/2212.06340
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
The subsequent observing runs of the advanced gravitational-wave detector network will likely provide us with various gravitational-wave observations of binary neutron star systems. For an accurate interpretation of these detections, we need reliable
Externí odkaz:
http://arxiv.org/abs/2202.09343
Autor:
Rashti, Alireza, Fabbri, Francesco Maria, Brügmann, Bernd, Chaurasia, Swami Vivekanandji, Dietrich, Tim, Ujevic, Maximiliano, Tichy, Wolfgang
Numerical studies of the dynamics of gravitational systems, e.g., black hole-neutron star systems, require physical and constraint-satisfying initial data. In this article, we present the newly developed pseudo-spectral code Elliptica, an infrastruct
Externí odkaz:
http://arxiv.org/abs/2109.14511
Autor:
Dudi, Reetika, Dietrich, Tim, Rashti, Alireza, Bruegmann, Bernd, Steinhoff, Jan, Tichy, Wolfgang
With an increasing number of expected gravitational-wave detections of binary neutron star mergers, it is essential that gravitational-wave models employed for the analysis of observational data are able to describe generic compact binary systems. Th
Externí odkaz:
http://arxiv.org/abs/2108.10429