498 citations · 2.4k across the 23 of their papers we have counts for
24 papers
A resistive MHD module in the GPU-accelerated GRMHD code GRaM-X
Sara Azizi, Swapnil Shankar, Philipp Mösta +2
Relativistic macroscopic plasma dynamics can be described by general-relativistic magnetohydrodynamics. In many high-energy astrophysical settings, such as the interior dynamics of…
Gravitational waves from magnetorotational core-collapse supernovae using 3D GRMHD simulations: effect of rotation and magnetic fields
Sophia C. Schnauck, Swapnil Shankar, Philipp Mösta +2
We investigate the gravitational wave emission for 10 supernova progenitors from magnetorotational core-collapse to the supernova explosion using fully three-dimensional dynamical-…
General Relativistic Magneto-Hydrodynamic Simulations with BAM: Implementation and Code Comparison
Anna Neuweiler, Tim Dietrich, Bernd Brügmann +7
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 n…
Code generation for AMReX with applications to numerical relativity
Adam J Peterson, Don Willcox, Phillip Moesta
We present a new python/SymPy based code generator for producing executable numerical expressions for partial differential equations in AMReX-based applications. We demonstrate the…
GRaM-X: A new GPU-accelerated dynamical spacetime GRMHD code for Exascale computing with the Einstein Toolkit
Swapnil Shankar, Philipp Mösta, Steven R. Brandt +3
We present GRaM-X (General Relativistic accelerated Magnetohydrodynamics on AMReX), a new GPU-accelerated dynamical-spacetime general relativistic magnetohydrodynamics (GRMHD) code…
Density Profiles of Collapsed Rotating Massive Stars Favor Long Gamma-Ray Bursts
Goni Halevi, Belinda Wu, Philipp Moesta +3
Long-duration gamma-ray bursts (lGRBs) originate in relativistic collimated outflows -- jets -- that drill their way out of collapsing massive stars. Accurately modeling this proce…
Propagation of a realistic magnetar jet through binary neutron star merger medium and implications for short gamma-ray bursts
Gustavo Soares, Pablo Bosch, Davide Lazzati +1
The origin of short gamma-ray bursts (sGRBs) is associated with outflows powered by the remnant of a binary neutron star merger. This remnant can be either a black hole or a highly…
Black hole to photosphere: 3D GRMHD simulations of collapsars reveal wobbling and hybrid composition jets
Ore Gottlieb, Matthew Liska, Alexander Tchekhovskoy +4
Long-duration -ray bursts (GRBs) accompany the collapse of massive stars and carry information about the central engine. However, no 3D models have been able to follow these jet…
-process Nucleosynthesis and Kilonovae from Hypermassive Neutron Star Remnants
Sanjana Curtis, Philipp Mösta, Zhenyu Wu +4
We investigate -process nucleosynthesis and kilonova emission resulting from binary neutron star (BNS) mergers based on a three-dimensional (3D) general-relativistic magnetohydr…
Estimating outflow masses and velocities in merger simulations: impact of r-process heating and neutrino cooling
Francois Foucart, Philipp Moesta, Teresita Ramirez +3
The determination of the mass, composition, and geometry of matter outflows in black hole-neutron star and neutron star-neutron star binaries is crucial to current efforts to model…
A magnetar engine for short GRBs and kilonovae
Philipp Mösta, David Radice, Roland Haas +2
We investigate the influence of magnetic fields on the evolution of binary neutron-star (BNS) merger remnants via three-dimensional (3D) dynamical-spacetime general-relativistic (G…
Gas Flows Within Cavities of Circumbinary Discs in Eccentric Binary Protostellar Systems
Philipp Mösta, Ronald E. Taam, Paul C. Duffell
The structure and evolution of gas flows within the cavity of a circumbinary disk (CBD) surrounding the stellar components in eccentric binaries are examined via two-dimensional hy…
R-process Nucleosynthesis from Three-Dimensional Magnetorotational Core-Collapse Supernovae
Philipp Mösta, Luke F. Roberts, Goni Halevi +4
We investigate r-process nucleosynthesis in three-dimensional (3D) general-relativistic magnetohydrodynamic simulations of rapidly rotating strongly magnetized core collapse. The s…
Recovery schemes for primitive variables in general-relativistic magnetohydrodynamics
Daniel M. Siegel, Philipp Mösta, Dhruv Desai +1
General-relativistic magnetohydrodynamic (GRMHD) simulations are an important tool to study a variety of astrophysical systems such as neutron star mergers, core-collapse supernova…
Turbulence in Core-Collapse Supernovae
David Radice, Ernazar Abdikamalov, Christian D. Ott +3
Multidimensional simulations show that non-radial, turbulent, fluid motion is a fundamental component of the core-collapse supernova (CCSN) explosion mechanism. Neutrino-driven con…
How loud are neutron star mergers?
Sebastiano Bernuzzi, David Radice, Christian D. Ott +3
We present results from the first large parameter study of neutron star mergers using fully general relativistic simulations with finite-temperature microphysical equations of stat…
A large scale dynamo and magnetoturbulence in rapidly rotating core-collapse supernovae
Philipp Mösta, Christian D. Ott, David Radice +3
Magnetohydrodynamic (MHD) turbulence is of key importance in many high-energy astrophysical systems, where MHD instabilities can amplify local magnetic field over very short time s…
IllinoisGRMHD: An Open-Source, User-Friendly GRMHD Code for Dynamical Spacetimes
Zachariah B. Etienne, Vasileios Paschalidis, Roland Haas +2
In the extreme violence of merger and mass accretion, compact objects like black holes and neutron stars are thought to launch some of the most luminous outbursts of electromagneti…
Neutrino-driven Turbulent Convection and Standing Accretion Shock Instability in Three-Dimensional Core-Collapse Supernovae
E. Abdikamalov, C. D. Ott, D. Radice +6
We conduct a series of numerical experiments into the nature of three-dimensional (3D) hydrodynamics in the postbounce stalled-shock phase of core-collapse supernovae using 3D gene…
Magnetorotational Core-Collapse Supernovae in Three Dimensions
P. Mösta, S. Richers, C. D. Ott +6
We present results of new three-dimensional (3D) general-relativistic magnetohydrodynamic simulations of rapidly rotating strongly magnetized core collapse. These simulations are t…
GRHydro: A new open source general-relativistic magnetohydrodynamics code for the Einstein Toolkit
Philipp Moesta, Bruno C. Mundim, Joshua A. Faber +7
We present the new general-relativistic magnetohydrodynamics (GRMHD) capabilities of the Einstein Toolkit, an open-source community-driven numerical relativity and computational re…
General-Relativistic Simulations of Three-Dimensional Core-Collapse Supernovae
C. D. Ott, E. Abdikamalov, P. Moesta +6
We study the three-dimensional (3D) hydrodynamics of the post-core-bounce phase of the collapse of a 27-solar-mass star and pay special attention to the development of the standing…
The NINJA-2 catalog of hybrid post-Newtonian/numerical-relativity waveforms for non-precessing black-hole binaries
P. Ajith, Michael Boyle, Duncan A. Brown +45
The Numerical INJection Analysis (NINJA) project is a collaborative effort between members of the numerical relativity and gravitational wave data analysis communities. The purpose…
Matching post-Newtonian and numerical relativity waveforms: systematic errors and a new phenomenological model for non-precessing black hole binaries
L. Santamaria, F. Ohme, P. Ajith +10
We present a new phenomenological gravitational waveform model for the inspiral and coalescence of non-precessing spinning black hole binaries. Our approach is based on a frequency…