31 papers
Spinning down neutron-star merger remnants with the Tayler-Spruit dynamo: Global simulations reveal the formation of massive disks and neutron-rich ejecta
Harry Ho-Yin Ng, Elias R. Most
The paper presents global simulations of long-lived neutron-star merger remnants that include a subgrid model for the Tayler‑Spruit dynamo, showing rapid spin‑down, formation of a…
GRACE: An Open-Source Framework for GPU-Accelerated Numerical Relativity
Carlo Musolino, Christian Ecker, Konrad Topolski +6
We present GRACE, a new GPU-accelerated numerical-relativity framework designed to run efficiently on heterogeneous high-performance computing platforms. Developed from scratch and…
Global Magnetohydrodynamic Simulations of Monster Shocks in Neutron Star Magnetospheres
Michael P. Grehan, Bart Ripperda, Andrei M. Beloborodov +2
Waves launched from the neutron star surface or inner magnetosphere propagate through the magnetosphere as small perturbations, but can grow relative to the background magnetic fie…
Hadronic Processes, Plasma Evolution and Neutrino Emission in Magnetic Towers of Neutron-Star Merger Remnants
Rostom Mbarek, Jiaxi Wu, Elias R. Most
Binary neutron star mergers can form short-lived magnetar-like remnants whose magnetically dominated polar towers reach --, but the microphysical…
Eccentricity as a signature of hierarchical subsolar-mass mergers in collapsar disks
Jiaxi Wu, Elias R. Most, Nils L. Vu +4
In this work, we investigate gravitational-wave signatures of a proposed subsolar-mass merger scenario resulting from fragmentation inside a collapsar accretion disk. This scenario…
Effects of magnetically driven shocks on nucleosynthesis and kilonovae from neutron star mergers
Yuan Feng, Oleg Korobkin, Elias R. Most +2
Neutron-star mergers can launch mildly relativistic to moderately relativistic outflows whose interaction with the ejecta can reshape kilonova emission. We parametrically study mag…