171 citations · 1.1k across the 17 of their papers we have counts for
17 papers
Binary Neutron Star Merger Simulations with Microphysical Equation of State using Spritz
Fatemeh Hossein Nouri, Jay V. Kalinani, Bruno Giacomazzo +2
We present the first binary neutron star merger simulations performed with the general-relativistic magnetohydrodynamics (GRMHD) Spritz code employing a finite-temperature tabulate…
Modelling the delayed shock-breakout emission following jet-launching binary neutron star mergers via relativistic magnetohydrodynamic simulations simulations
Matteo Pais, Riccardo Ciolfi, Andrea Pavan
In binary neutron star (BNS) mergers launching a relativistic jet, an electromagnetic (EM) signal is produced when the jet-driven shock breaks out of the merger ejecta. The observe…
Simulating the quasi-ballistic regime of a short Gamma-Ray Burst jet
Emma Dreas, Andrea Pavan, Riccardo Ciolfi +1
This study extends the 3D magnetohydrodynamic (MHD) simulation of a jet emerging from a binary neutron star (BNS) merger presented in Pavan et al. (2023), in which an incipient jet…
Magnetically-induced outflows from binary neutron star merger remnants
Daniel M. Siegel, Riccardo Ciolfi
Recent observations by the Swift satellite have revealed long-lasting (), "plateau-like" X-ray afterglows in the vast majority of short gamma-ray bursts…
Modelling the Magnetic Field Configuration of Neutron Stars
Riccardo Ciolfi
The properties of the extremely strong magnetic fields of neutron stars affect in a unique way their evolution and the associated phenomenology. Due to the lack of constraints from…
Magnetic Field Instabilities in Neutron Stars
Riccardo Ciolfi
Magnetic fields represent a crucial aspect of the physics and astrophysics of neutron stars. Despite its great relevance, the internal magnetic field configuration of neutron stars…
Magnetic field amplification in hypermassive neutron stars via the magnetorotational instability
Daniel M. Siegel, Riccardo Ciolfi
Mergers of binary neutron stars likely lead to the formation of a hypermassive neutron star (HMNS), which is metastable and eventually collapses to a black hole. This merger scenar…
Magnetically driven winds from differentially rotating neutron stars and X-ray afterglows of short gamma-ray bursts
Daniel M. Siegel, Riccardo Ciolfi, Luciano Rezzolla
Besides being among the most promising sources of gravitational waves, merging neutron star binaries also represent a leading scenario to explain the phenomenology of short gamma-r…
On the universality of I-Love-Q relations in magnetized neutron stars
Brynmor Haskell, Riccardo Ciolfi, Francesco Pannarale +1
Recently, general relations among the quadrupole moment (Q), the moment of inertia (I), and the tidal deformability (Love number) of a neutron star were shown to exist. They are ne…
Twisted-torus configurations with large toroidal magnetic fields in relativistic stars
Riccardo Ciolfi, Luciano Rezzolla
Understanding the properties of the internal magnetic field of neutron stars remains a theoretical challenge. Over the last years, twisted-torus geometries have been considered bot…
Magnetorotational instability in relativistic hypermassive neutron stars
Daniel M. Siegel, Riccardo Ciolfi, Abraham I. Harte +1
A differentially rotating hypermassive neutron star (HMNS) is a metastable object which can be formed in the merger of neutron-star binaries. The eventual collapse of the HMNS into…
Poloidal-Field Instability in Magnetized Relativistic Stars
Riccardo Ciolfi, Luciano Rezzolla
We investigate the instability of purely poloidal magnetic fields in nonrotating neutron stars by means of three-dimensional general-relativistic magnetohydrodynamics simulations,…
Instability-driven evolution of poloidal magnetic fields in relativistic stars
Riccardo Ciolfi, Samuel K. Lander, Gian Mario Manca +1
The problem of the stability of magnetic fields in stars has a long history and has been investigated in detail in perturbation theory. Here we consider the nonlinear evolution of…
Structure, Deformations and Gravitational Wave Emission of Magnetars
L. Gualtieri, R. Ciolfi, V. Ferrari
Neutron stars can have, in some phases of their life, extremely strong magnetic fields, up to 10^15-10^16 G. These objects, named magnetars, could be powerful sources of gravitatio…
Stochastic background of gravitational waves emitted by magnetars
Stefania Marassi, Riccardo Ciolfi, Raffaella Schneider +2
Two classes of high energy sources in our galaxy are believed to host magnetars, neutron stars whose emission results from the dissipation of their magnetic field. The extremely hi…
Structure and deformations of strongly magnetized neutron stars with twisted torus configurations
R. Ciolfi, V. Ferrari, L. Gualtieri
We construct general relativistic models of stationary, strongly magnetized neutron stars. The magnetic field configuration, obtained by solving the relativistic Grad-Shafranov equ…
Relativistic models of magnetars: the twisted-torus magnetic field configuration
R. Ciolfi, V. Ferrari, L. Gualtieri +1
We find general relativistic solutions of equilibrium magnetic field configurations in magnetars, extending previous results of Colaiuda et al. (2008). Our method is based on the s…