Zobrazeno 1 - 10
of 9 866
pro vyhledávání: '"Radice, A"'
Autor:
Rashti, Alireza, Gamba, Rossella, Chandra, Koustav, Radice, David, Daszuta, Boris, Cook, William, Bernuzzi, Sebastiano
The detection and subsequent inference of binary black hole signals rely heavily on the accuracy of the waveform model employed. In the highly non-linear, dynamic, and strong-field regime near merger, these waveforms can only be accurately modeled th
Externí odkaz:
http://arxiv.org/abs/2411.11989
We present a phase-field model for simulating the solid-state dewetting of anisotropic crystalline films on non-planar substrates. This model exploits two order parameters to trace implicitly the crystal free surface and the substrate profile in both
Externí odkaz:
http://arxiv.org/abs/2411.11775
Autor:
Marra, Giampiero, Radice, Rosalba
Motivated by studies investigating causal effects in survival analysis, we propose a transformation model to quantify the impact of a binary treatment on a time-to-event outcome. The approach is based on a flexible linear transformation structural mo
Externí odkaz:
http://arxiv.org/abs/2410.15968
We present the first seconds-long multidimensional general relativistic neutrino magnetohydrodynamic simulations of accretion-induced collapse (AIC) in rapidly rotating, magnetized white dwarfs (WDs). Our findings show that, with sufficiently strong
Externí odkaz:
http://arxiv.org/abs/2410.10938
We investigate the first passage time beyond a barrier located at $b\geq0$ of a random walk with independent and identically distributed jumps, starting from $x_0=0$. The walk is subject to stochastic resetting, meaning that after each step the evolu
Externí odkaz:
http://arxiv.org/abs/2410.05835
Autor:
Bernuzzi, Sebastiano, Magistrelli, Fabio, Jacobi, Maximilian, Logoteta, Domenico, Perego, Albino, Radice, David
We present 3D general-relativistic neutrino-radiation hydrodynamics simulations of asymmetric binary neutron star mergers producing long-lived neutron stars remnants and spanning a fraction of their cooling time scale. Two binaries with mass ratios o
Externí odkaz:
http://arxiv.org/abs/2409.18185
The concept of complex harmonic potential in a doubly connected condenser (capacitor) is introduced as an analogue of the real-valued potential of an electrostatic vector field. In this analogy the full differential of a complex potential plays the r
Externí odkaz:
http://arxiv.org/abs/2409.16476
Autor:
Fields, Jacob, Zhu, Hengrui, Radice, David, Stone, James M., Cook, William, Bernuzzi, Sebastiano, Daszuta, Boris
We introduce an extension to the AthenaK code for general-relativistic magnetohydrodynamics (GRMHD) in dynamical spacetimes using a 3+1 conservative Eulerian formulation. Like the fixed-spacetime GRMHD solver, we use standard finite-volume methods to
Externí odkaz:
http://arxiv.org/abs/2409.10384
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
Quasiperiodic oscillations (QPOs) have been recently discovered in the short gamma-ray bursts (GRBs) 910711 and 931101B. Their frequencies are consistent with those of the radial and quadrupolar oscillations of binary neutron star merger remnants, as
Externí odkaz:
http://arxiv.org/abs/2408.16534