Zobrazeno 1 - 10
of 9 155
pro vyhledávání: '"Zappa, A"'
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:
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:
Scalora, M., Hallman, K., Mukhopadhyay, S., Pruett, S., Zappa, D., Comini, E., de Ceglia, D., Vincenti, M. A., Akozbek, N., Trull, J., Cojocaru, C.
By uncovering novel aspects of second harmonic generation in aluminum we show that there are unusual and remarkable consequences of resonant absorption, namely an unexpectedly critical role that bound electrons play for light-matter interactions acro
Externí odkaz:
http://arxiv.org/abs/2403.11902
We present an extensive study of the effects of neutrino transport in 3-dimensional general relativistic radiation hydrodynamics (GRHD) simulations of binary neutron star (BNS) mergers using our moment-based, energy-integrated neutrino radiation tran
Externí odkaz:
http://arxiv.org/abs/2311.12923
Autor:
Cook, William, Daszuta, Boris, Fields, Jacob, Hammond, Peter, Albanesi, Simone, Zappa, Francesco, Bernuzzi, Sebastiano, Radice, David
We present the extension of GR-Athena++ to general-relativistic magnetohydrodynamics (GRMHD) for applications to neutron star spacetimes. The new solver couples the constrained transport implementation of Athena++ to the Z4c formulation of the Einste
Externí odkaz:
http://arxiv.org/abs/2311.04989
Autor:
Espino, Pedro Luis, Hammond, Peter, Radice, David, Bernuzzi, Sebastiano, Gamba, Rossella, Zappa, Francesco, Micchi, Luis Felipe Longo, Perego, Albino
We study out-of-thermodynamic equilibrium effects in neutron star mergers with 3D general-relativistic neutrino-radiation large-eddy simulations. During merger, the cores of the neutron stars remain cold ($T \sim$ a few MeV) and out of thermodynamic
Externí odkaz:
http://arxiv.org/abs/2311.00031
Various studies identified possible drivers of extremes of Arctic sea ice reduction, such as observed in the summers of 2007 and 2012, including preconditioning, local feedback mechanisms, oceanic heat transport and the synoptic- and large-scale atmo
Externí odkaz:
http://arxiv.org/abs/2308.09984
Autor:
Stoop, Laurens P., van der Wiel, Karin, Zappa, William, Haverkamp, Arno, Feelders, Ad J., Broek, Machteld van den
We propose an index to quantify and analyse the impact of climatological variability on the energy system at different timescales. We define the Climatological Renewable Energy Deviation Index (CREDI) as the cumulative anomaly of a renewable resource
Externí odkaz:
http://arxiv.org/abs/2307.08909
Autor:
Andrade, Tomas, Trenado, Juan, Albanesi, Simone, Gamba, Rossella, Bernuzzi, Sebastiano, Nagar, Alessandro, Calderon-Bustillo, Juan, Sanchis-Gual, Nicolas, Font, Jose A., Cook, William, Daszuta, Boris, Zappa, Francesco, Radice, David
Dynamical captures of black holes may take place in dense stellar media due to the emission of gravitational radiation during a close passage. Detection of such events requires detailed modelling, since their phenomenology qualitatively differs from
Externí odkaz:
http://arxiv.org/abs/2307.08697
Autor:
Wuijts, Rogier H., Stoop, Laurens P., Hu, Jing, Haverkamp, Arno, Wiersma, Frank, Zappa, William, van der Schrier, Gerard, Akker, Marjan van den, Broek, Machteld van den
The integration of renewable energy sources into power systems is expected to increase significantly in the coming decades. This can result in critical situations related to the strong variability in space and time of weather patterns. During these c
Externí odkaz:
http://arxiv.org/abs/2303.15492