Jay Vijay Kalinani

The Einstein Toolkit

Steven R. Brandt, Beyhan Karakas, Cheng Ch, Peter Diener et autres

The Einstein Toolkit is a community-driven software platform of core computational tools to advance and support research in relativistic astrophysics and gravitational physics. The Einstein Toolkit has been supported by NSF 2411068/2004157/2004044/2004311/2004879/2003893/2114582/2227105,

us, ca, gb, de, pt, it, mx, ro, jp, nl, es, fr, au, Afrique du Sud (code pays fourni par la source)

Jet–Environment Interaction after Delayed Collapse in Binary Neutron Star Mergers

Jay Vijay Kalinani, Riccardo Ciolfi, Manuela Campanelli, Bruno Giacomazzo et autres

Abstract We present general relativistic magnetohydrodynamic simulations of binary neutron star mergers, where the collapse of the metastable massive neutron star (MNS) remnant leads to the production of an incipient jet having terminal Lorentz factor and Poynting-flux luminosity compatible with a short …

us, it (code pays fourni par la source)

Accelerating Numerical Relativity Simulations with New Multistep Fourth-Order Runge-Kutta Methods

Lucas Timotheo Sanches, Steven R. Brandt, Jay Vijay Kalinani, Liwei Ji et autres

Many HPC applications that solve differential equations rely on the Runge-Kutta family of methods for time integration. Among these methods, the fourth-order accurate RK4 scheme is especially popular. This time integration scheme requires applications to evaluate four intermediate stages to take one …

Accelerating numerical relativity simulations with new multistep fourth-order Runge–Kutta methods

Lucas Timotheo Sanches, Steven R. Brandt, Jay Vijay Kalinani, Liwei Ji et autres

Abstract Many HPC applications that solve differential equations rely on the Runge–Kutta (RK) family of methods for time integration . Among these methods, the fourth-order accurate RK4 scheme is especially popular. This time integration scheme requires applications to evaluate four intermediate stages …

us, ca (code pays fourni par la source)

Role of injection parameters in jet propagation through realistic binary neutron star merger environments

Andrea Pavan, R. Ciolfi, Emma Dreas, Jay Vijay Kalinani

ABSTRACT After the first multimessenger observation of a binary neutron star (BNS) merger powering a short-duration gamma-ray burst (GRB), GW170817-GRB 170817A, remarkable effort is ongoing to unravel the evolution of the collimated, relativistic outflow (or jet) that was launched during the merger …

it, us (code pays fourni par la source)

Relativistic gas accretion onto supermassive black Hole binaries from inspiral through merger

Lorenzo Ennoggi, Manuela Campanelli, Yosef Zlochower, Scott C. Noble et autres

Accreting supermassive black hole binaries are powerful multimessenger sources emitting both gravitational and EM radiation. Understanding the accretion dynamics of these systems and predicting their distinctive EM signals is crucial to informing and guiding upcoming efforts aimed at detecting gravitational waves produced …

Role of injection parameters in jet propagation through realistic binary neutron star merger environments

Andrea Pavan, R. Ciolfi, Emma Dreas, Jay Vijay Kalinani

After the first multi-messenger observation of a binary neutron star (BNS) merger powering a short-duration gamma-ray burst (GRB), GW170817-GRB 170817A, remarkable effort is ongoing to unravel the evolution of the collimated, relativistic outflow (or jet) that was launched during the merger and …

AsterX: a new open-source GPU-accelerated GRMHD code for dynamical spacetimes

Jay Vijay Kalinani, Li-Wei Ji, Lorenzo Ennoggi, Federico G. Lopez Armengol et autres

Abstract We present AsterX, a novel open-source, modular, 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 adaptive mesh refinement (AMR) through CarpetX, the new driver for the …

us, br, it, ca (code pays fourni par la source)

AsterX: a new open-source GPU-accelerated GRMHD code for dynamical spacetimes

Jay Vijay Kalinani, Li-Wei Ji, Lorenzo Ennoggi, Federico G. Lopez Armengol et autres

We present AsterX, a novel open-source, modular, 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 adaptive mesh refinement (AMR) through CarpetX, the new driver for the Einstein …

Jet-environment interplay in magnetized binary neutron star mergers

Andrea Pavan, R. Ciolfi, Jay Vijay Kalinani, A. Mignone

ABSTRACT GRB 170817A, the first short gamma-ray burst (sGRB) to be detected in coincidence with a gravitational wave signal, demonstrated that merging binary neutron star (BNS) systems can power collimated ultra-relativistic jets, and in turn, produce sGRBs. Moreover, it revealed that sGRB …

it (code pays fourni par la source)

Jet-environment interplay in magnetized binary neutron star mergers

Andrea Pavan, R. Ciolfi, Jay Vijay Kalinani, A. Mignone

GRB 170817A, the first short gamma-ray burst (sGRB) to be detected in coincidence with a gravitational wave signal, demonstrated that merging binary neutron star (BNS) systems can power collimated ultra-relativistic jets and, in turn, produce sGRBs. Moreover, it revealed that sGRB jets …

Turbulent magnetic field amplification in binary neutron star mergers

Carlos Palenzuela, Ricard Aguilera-Miret, F. Carrasco, R. Ciolfi et autres

Magnetic fields are expected to play a key role in the dynamics and the ejection mechanisms that accompany the merger of two neutron stars. General relativistic magnetohydrodynamic (MHD) simulations offer a unique opportunity to unravel the details of the ongoing physical processes. …

es, ar, it, de (code pays fourni par la source)