34 citations · 89 across the 16 of their papers we have counts for
16 papers
Numerical simulations of waves and turbulence in coronal loops: observables and spectra
Fabio Feraco, Francesco Pucci, Claudio Meringolo +11
We investigate numerically the time evolution of velocity and magnetic field fluctuations in a coronal loop, focusing on the dynamics due to both phase mixing and turbulent cascade…
Particle-acceleration mechanisms in multispecies relativistic plasmas
Claudio Meringolo, Mario Imbrogno, Alejandro Cruz-Osorio +2
While collisionless plasmas are ubiquitously present near astrophysical compact objects, the impact that their composition has on the high-energy emission is presently unknown. We…
FPIC: a new Particle-In-Cell code for stationary and axisymmetric black-hole spacetimes
Claudio Meringolo, Luciano Rezzolla
In this paper we present a newly developed GRPIC code framework called FPIC, providing a detailed description of the Maxwell-equations solver, of the particle ``pushers'', and of t…
Supermassive black-hole imaging with a self-consistent electron-temperature prescription
Alejandro Cruz-Osorio, Claudio Meringolo, Christian M. Fromm +5
The recent 230 GHz observations by the Event Horizon Telescope have resolved the innermost structure of the M87 galaxy, revealing a ring-like feature consistent with thermal synchr…
Measuring the properties of homogeneous turbulence in curved spacetimes
Rita Megale, Alejandro Cruz-Osorio, Giuseppe Ficarra +5
Turbulence in curved spacetimes in general, and in the vicinity of black holes (BHs) in particular, represents a poorly understood phenomenon that is often analysed employing techn…
Electromagnetic Energy Extraction from Kerr Black Holes: Ab-Initio Calculations
Claudio Meringolo, Filippo Camilloni, Luciano Rezzolla
The possibility of extracting energy from a rotating black hole via the Blandford-Znajek mechanism represents a cornerstone of relativistic astrophysics. We present general-relativ…
Turbulence and Magnetic Reconnection in Relativistic Multispecies Plasmas
Mario Imbrogno, Claudio Meringolo, Alejandro Cruz-Osorio +3
Simulations of relativistic plasmas traditionally focus on the dynamics of two-species mixtures of charged particles under the influence of external magnetic fields and those gener…
The Interaction of a Supernova Remnant with background interstellar turbulence
Giuseppe Prete, Silvia Perri, Claudio Meringolo +2
Supernova explosions (SNe) are among the most energetic events in the Universe. After the explosion, the material ejected by the Supernova expands throughout the interstellar mediu…
Long-living Equilibria in Kinetic Astrophysical Plasma Turbulence
Mario Imbrogno, Claudio Meringolo, Sergio Servidio +3
Turbulence in classical fluids is characterized by persistent structures that emerge from the chaotic landscape. We investigate the analogous process in fully kinetic plasma turbul…
Joint action of phase mixing and nonlinear effects in MHD waves propagating in coronal loops
Claudio Meringolo, Francesco Pucci, Giuseppe Nisticò +3
We investigate the interplay of phase mixing and the nonlinear turbulent cascade in the evolution and dissipation of Alfvén waves using compressible magnetohydrodynamics numerical…
Turbulence and particle energization in twisted flux ropes in solar-wind conditions
Oreste Pezzi, Domenico Trotta, Simone Benella +6
Context. The mechanisms regulating the transport and energization of charged particles in space and astrophysical plasmas are still debated. Plasma turbulence is known to be a powe…
Microphysical Plasma Relations from Special-relativistic Turbulence
Claudio Meringolo, Alejandro Cruz-Osorio, Luciano Rezzolla +1
The microphysical, kinetic properties of astrophysical plasmas near accreting compact objects are still poorly understood. For instance, in modern general-relativistic magnetohydro…
Aliasing Instabilities in the Numerical Evolution of the Einstein Field Equations
Claudio Meringolo, Sergio Servidio
The Einstein field equations of gravitation are characterized by cross-scale, high-order nonlinear terms, representing a challenge for numerical modeling. In an exact spectral deco…
Extreme Gravitational Interactions in the Problem of Three Black Holes in General Relativity
Mario Imbrogno, Claudio Meringolo, Sergio Servidio
We study the three-body problem going from Newtonian mechanics to general relativity. In the classical case, we model the interactions in a typical chaotic configuration, identifyi…
A spectral method algorithm for numerical simulations of gravitational fields
Claudio Meringolo, Sergio Servidio, Pierluigi Veltri
A numerical study of the Einstein field equations, based on the 3+1 foliation of the spacetime, is presented. A pseudo-spectral technique has been employed for simulations in vacuu…
A spectral approach to numerical simulations of the ADM equations
C. Meringolo, S. Servidio, P. Veltri
We present a numerical study of the Einstein equations, according to the Arnowitt-Deser-Misner (ADM) formalism, in order to simulate the dynamics of gravitational fields. We took i…