130 citations · 580 across the 23 of their papers we have counts for
24 papers
Simulations of Electromagnetic Cascades in the Intergalactic Medium with Plasma Instabilities: the grplinst Code
Rafael Alves Batista, Andrey Saveliev
Electromagnetic cascades initiated by TeV gamma rays from distant blazars provide one of the cleanest indirect probes of the intergalactic medium and, in particular, of intergalact…
CRPropa 3.3: Toward a Unified Multi-Messenger Framework from GeV to ZeV Energies
Sophie Aerdker, Rafael Alves Batista, Julia Becker Tjus +11
We present CRPropa 3.3, the latest release of the publicly available Monte Carlo framework for simulating the propagation of high-energy particles in astrophysical environments. Th…
Spectra for the Vacuum Cherenkov Effect in Astrophysical Electromagnetic Cascades with Lorentz Invariance Violation
Andrey Saveliev, Rafael Alves Batista, Feodor Mishin
Lorentz invariance violation is a feature of several quantum gravity models in which Lorentz symmetry is broken at high energies, possibly leading to changes in particle behavior a…
Spectra for Reactions in Astrophysical Electromagnetic Cascades with Lorentz Invariance Violation: The Vacuum Cherenkov Effect
Andrey Saveliev, Rafael Alves Batista, Feodor Mishin
Lorentz invariance violation is a feature of several quantum gravity models in which Lorentz symmetry is broken at high energies, leading to potential changes in particle behavior…
Simulating Electromagnetic Cascades with Lorentz Invariance Violation
Andrey Saveliev, Rafael Alves Batista
Lorentz invariance violation (LIV) is a phenomenon featuring in various quantum gravity models whereby Lorentz symmetry is broken at high energies, potentially impacting the behavi…
CRPropa 3.2: a public framework for high-energy astroparticle simulations
Sophie Aerdker, Rafael Alves Batista, Julia Becker Tjus +16
CRPropa is a Monte Carlo framework for simulating the propagation of (ultra-) high-energy particles in the Universe, including cosmic rays, gamma rays, electrons, and neutrinos. It…
On Numerical Simulations of Intergalactic Electromagnetic Cascades with Lorentz Invariance Violation
Andrey Saveliev, Rafael Alves Batista
Lorentz invariance violation (LIV) is a proposed phenomenon where Lorentz symmetry is violated at high energies, potentially affecting particle dynamics and interactions. We use nu…
CRPropa 3.2 -- an advanced framework for high-energy particle propagation in extragalactic and galactic spaces
Rafael Alves Batista, Julia Becker Tjus, Julien Dörner +14
The landscape of high- and ultra-high-energy astrophysics has changed in the last decade, largely due to the inflow of data collected by large-scale cosmic-ray, gamma-ray, and neut…
On the Non-Minimal Coupling of Magnetic Fields with Gravity in Schwarzschild Spacetime
Kumar Ravi, Petar Pavlović, Andrey Saveliev
In this work we study the effects of non-minimal coupling between electromagnetism and gravity, which are motivated by quantum effects such as vacuum polarization. We investigate t…
CRPropa 3.2: a framework for high-energy astroparticle propagation
Rafael Alves Batista, Julia Becker Tjus, Julien Dörner +14
The landscape of high- and ultra-high-energy astrophysics has changed in the last decade, in large part owing to the inflow of high-quality data collected by present cosmic-ray, ga…
Multimessenger Constraints on Intergalactic Magnetic Fields from Flaring Objects
A. Saveliev, R. Alves Batista
The origin of magnetic fields in the Universe is an open problem. Seed magnetic fields possibly produced in early times may have survived up to the present day close to their origi…
The Gamma-Ray Window to Intergalactic Magnetism
Rafael Alves Batista, Andrey Saveliev
One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is through gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays or cosm…
Multimessenger Constraints on Intergalactic Magnetic Fields from the Flare of TXS 0506+056
Rafael Alves Batista, Andrey Saveliev
The origin of magnetic fields in the universe is an open problem. Seed magnetic fields possibly produced in early times may have survived up to the present day close to their origi…
The Intrinsic Gamma-Ray Spectrum of TXS 0506+056: Intergalactic Propagation Effects
Andrey Saveliev, Rafael Alves Batista
The recent observation of high-energy neutrinos from the 2017 flare of the blazar TXS~0506+056, together with counterparts across the whole electromagnetic spectrum, opens up new p…
Influence of the Vacuum Polarization Effect on the Motion of Charged Particles in the Magnetic Field around a Schwarzschild Black Hole
Petar Pavlović, Andrey Saveliev, Marko Sossich
The consequences of the vacuum polarization effect in magnetic fields around a Schwarzschild Black Hole on the motion of charged particles are investigated in this work. Using the…
The Impact of Plasma Instabilities on the Spectra of TeV Blazars
Rafael Alves Batista, Andrey Saveliev, Elisabete M. de Gouveia Dal Pino
Relativistic jets from blazars are known to be sources of very-high-energy gamma rays (VHEGRs). During their propagation in the intergalactic space, VHEGRs interact with pervasive…
On the Measurement of the Helicity of Intergalactic Magnetic Fields Using Ultra-High-Energy Cosmic Rays
Rafael Alves Batista, Andrey Saveliev
The origin of the first magnetic fields in the Universe is a standing problem in cosmology. Intergalactic magnetic fields (IGMFs) may be an untapped window to the primeval Universe…
Stringent Limit on Primordial Magnetic Fields from the Cosmic Microwave Background Radiation
Karsten Jedamzik, Andrey Saveliev
Primordial magnetic fields (PMFs), being present before the epoch of cosmic recombination, induce small-scale baryonic density fluctuations. These inhomogeneities lead to an inhomo…
Morphological properties of blazar-induced gamma-ray haloes
Rafael Alves Batista, Andrey Saveliev
At TeV energies and above gamma rays can induce electromagnetic cascades, whose charged component is sensitive to intervening intergalactic magnetic fields (IGMFs). When interpreti…
Probing Intergalactic Magnetic Fields with Simulations of Electromagnetic Cascades
Rafael Alves Batista, Andrey Saveliev, Guenter Sigl +1
We determine the effect of intergalactic magnetic fields on the distribution of high energy gamma rays by performing three-dimensional Monte Carlo simulations of the development of…
The Role of Plasma Instabilities in the Propagation of Gamma-Rays from Distant Blazars
Andrey Saveliev, Carmelo Evoli, Guenter Sigl
The observation in the GeV band of distant blazars has been recently used to put constraints on the Extragalactic Background Light (EBL) and Extragalactic Magnetic Fields (EGMF). T…
Evolution of Helical Cosmic Magnetic Fields as Predicted by Magnetohydrodynamic Closure Theory
Andrey Saveliev, Karsten Jedamzik, Guenter Sigl
We extend our recent derivation of the time evolution equations for the energy content of magnetic fields and turbulent motions for incompressible, homogeneous, and isotropic turbu…
Time Evolution of the Large-Scale Tail of Nonhelical Primordial Magnetic Fields with Back-Reaction of the Turbulent Medium
Andrey Saveliev, Karsten Jedamzik, Guenter Sigl
We present a derivation of the time evolution equations for the energy content of nonhelical magnetic fields and the accompanying turbulent flows from first principles of incompres…
Lorentz Invariance Violation and Chemical Composition of Ultra High Energy Cosmic Rays
Andrey Saveliev, Luca Maccione, Guenter Sigl
Motivated by experimental indications of a significant presence of heavy nuclei in the cosmic ray flux at ultra high energies ($\gtrsim 10^{19} \eV$), we consider the effects of Pl…