49 citations · 102 across the 11 of their papers we have counts for
12 papers
Distributions of particles accelerated by strong Alfvénic turbulence
Stanislav Boldyrev, Daniel Humphrey, Vadim Roytershteyn +1
This work presents a model for generating nonthermal power-law tails of particles' energy probability density functions in turbulent collisionless plasmas, applicable to both non-r…
Particle acceleration and pitch-angle evolution in relativistic turbulence
Daniel Humphrey, Cristian Vega, Stanislav Boldyrev +1
Synchrotron radiation detected from relativistic astrophysical objects such as pulsar-wind nebulae and {jets from active galactic nuclei} depends on the magnetic fields and the dis…
Anisotropic particle acceleration in Alfvénic turbulence
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn
Alfvénic turbulence is an effective mechanism for particle acceleration in strongly magnetized, relativistic plasma. In this study, we investigate a scenario where turbulent plasma…
Particle acceleration in relativistic Alfvénic turbulence
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn
Strong magnetically dominated Alfvénic turbulence is an efficient engine of non-thermal particle acceleration in a relativistic collisionless plasma. We argue that in the limit of…
Relativistic Alfvén turbulence at kinetic scales
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn
In a strongly magnetized, magnetically dominated relativistic plasma, Alfvénic turbulence can extend to scales much smaller than the particle inertial scales. It leads to an energy…
Electron-Scale Current Sheets and Energy Dissipation in 3D Kinetic-Scale Plasma Turbulence with Low Electron Beta
Cristian Vega, Vadim Roytershteyn, Gian Luca Delzanno +1
3D kinetic-scale turbulence is studied numerically in the regime where electrons are strongly magnetized (the ratio of plasma species pressure to magnetic pressure is for…
Spatial intermittency of particle distribution in relativistic plasma turbulence
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn
Relativistic magnetically dominated turbulence is an efficient engine for particle acceleration in a collisionless plasma. Ultrarelativistic particles accelerated by interactions w…
Fast iterative regularization by reusing data
Cristian Vega, Cesare Molinari, Lorenzo Rosasco +1
Discrete inverse problems correspond to solving a system of equations in a stable way with respect to noise in the data. A typical approach to enforce uniqueness and select a meani…
Spectra of magnetic turbulence in a relativistic plasma
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn
We present a phenomenological and numerical study of strong Alfvénic turbulence in a magnetically dominated collisionless relativistic plasma with a strong background magnetic fiel…
Turbulence and particle acceleration in a relativistic plasma
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn +1
In a collisionless plasma, the energy distribution function of plasma particles can be strongly affected by turbulence. In particular, it can develop a non-thermal power-law tail a…
Random Activations in Primal-Dual Splittings for Monotone Inclusions with a priori Information
Luis Briceño-Arias, Julio Deride, Cristian Vega
In this paper, we propose a numerical approach for solving composite primal-dual monotone inclusions with a priori information. The underlying a priori information set is represent…
Electron-only reconnection in kinetic Alfvén turbulence
Cristian Vega, Vadim Roytershteyn, Gian Luca Delzanno +1
We study numerically small-scale reconnection events in kinetic, low-frequency, quasi-2D turbulence (termed kinetic-Alfvén turbulence). Using 2D particle-in-cell simulations, we de…