A5017884732- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Pulsars and Gravitational Waves Research
- Laser-Plasma Interactions and Diagnostics
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Relativity and Gravitational Theory
- Particle Accelerators and Free-Electron Lasers
- Atmospheric Ozone and Climate
- Magnetic confinement fusion research
- Mechanics and Biomechanics Studies
- Astro and Planetary Science
- Statistical and numerical algorithms
- History and Developments in Astronomy
- Planetary Science and Exploration
- Photocathodes and Microchannel Plates
- Astronomical Observations and Instrumentation
- Geomagnetism and Paleomagnetism Studies
- Precipitation Measurement and Analysis
Institute of Space Science - INFLPR Subsidiary
2013-2023
UniNettuno University
2018
Centre de Développement des Technologies Avancées
2016-2017
Max Planck Institute for Radio Astronomy
2004-2014
Institutul de Fizică Atomică
2014
Max Planck Innovation
2008-2012
Max Planck Society
2008-2012
Consejo Nacional de Investigaciones Científicas y Técnicas
2011
Institute of Physics Rosario
2011
Universidad Nacional de La Plata
2011
Abstract The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it offer unique opportunities to address many key astrophysical questions in completely novel way. synergy with ground-based and space-born instruments the electromagnetic domain, by enabling multi-messenger observations, add further discovery potential of LISA. next decade is crucial prepare community LISA’s first observations. This review outlines...
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
One of the key open questions in study relativistic jets is their interaction with environment. Here, we initial evolution both electron-proton and electron-positron jets, focusing on lateral ambient plasma. We trace generation toroidal magnetic field generated by kinetic Kelvin-Helmholtz (kKH) Mushroom instabilities (MI). This collimates jet. show that jet, electrons are perpendicularly accelerated jet collimation. The polarity switches from clockwise to anti-clockwise middle as weaken. For...
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it offer unique opportunities to address many key astrophysical questions in completely novel way. synergy with ground-based and space-born instruments the electromagnetic domain, by enabling multi-messenger observations, add further discovery potential of LISA. next decade is crucial prepare community LISA's first observations. This review outlines extensive...
We have investigated magnetic field generation in velocity shears via the kinetic Kelvin–Helmholtz instability (kKHI) using a relativistic plasma jet core and stationary sheath. Our three-dimensional particle-in-cell simulations consider cores with Lorentz factors of 1.5, 5, 15 for both electron–proton electron–positron plasmas. For plasmas, we find strong large-scale DC currents fields that extend over entire shear surface reach thicknesses few tens electron skin depths. alternating fields....
EUSO-Balloon is a pathfinder mission for the Extreme Universe Space Observatory onboard Japanese Experiment Module (JEM-EUSO). It was launched on moonless night of 25th August 2014 from Timmins, Canada. The flight ended successfully after maintaining target altitude 38 km five hours. One part 2.5 hour underflight using helicopter equipped with three UV light sources (LED, xenon flasher and laser) to perform an inflight calibration examine detectors capability measure tracks moving at speed...
Abstract. We have investigated the generation of magnetic fields associated with velocity shear between an unmagnetized relativistic jet and sheath plasma. examined strong generated by kinetic (Kelvin–Helmholtz) instabilities. Compared to previous studies using counter-streaming performed Alves et al. (2012), structure Kelvin–Helmholtz instability (KKHI) our jet-sheath configuration is slightly different, even for global evolution transverse field. In simulations major components growing...
One of the key questions in study relativistic jets is how magnetic reconnection occurs and whether it can effectively accelerate electrons jet. We performed 3D particle-in-cell (PIC) simulations a electron-proton jet relatively large radius that carries helical field. focussed our investigation on interaction between ambient plasma explore field affects excitation kinetic instabilities such as Weibel instability (WI), Kelvin-Helmholtz (kKHI), mushroom (MI). In these are indeed excited,...
The particle-in-cell (PIC) method was developed to investigate microscopic phenomena, and with the advances in computing power, newly codes have been used for several fields, such as astrophysical, magnetospheric, solar plasmas. PIC applications grown extensively, large powers available on supercomputers Pleiades Blue Waters US. For astrophysical plasma research, methods utilized topics, reconnection, pulsar dynamics, non-relativistic shocks, relativistic jets. simulations of jets reviewed...
In this study we investigate jet interaction at a microscopic level in cosmological environment, which responds to key open question the of relativistic jets. Using small simulation systems during prior research, initially studied evolution both electron-proton and electron-positron jets containing helical magnetic fields, by focusing on their interactions with an ambient plasma. Here, using larger radii, have performed simulations global fields order examine how affect kinetic instabilities...
In the study of relativistic jets one key open questions is their interaction with environment on microscopic level. Here, we initial evolution both electron–proton ( e − – p + ) and electron–positron ± containing helical magnetic fields, focusing an ambient plasma. We have performed simulations “global” fields in order to examine how affect kinetic instabilities such as Weibel instability, Kelvin-Helmholtz instability (kKHI) Mushroom (MI). our simulation these are suppressed new types can...
ABSTRACT We have investigated how kinetic instabilities such as the Weibel instability (WI), mushroom (MI), and Kelvin–Helmholtz (kKHI) are excited in jets without with a toroidal magnetic field, contribute to particle acceleration. In this work, we use new jet injection scheme, where an electric current is self-consistently generated at orifice by particles, which produce field. perform five different simulations for sufficiently long time examine non-linear effects of evolution. inject...
We investigated particle acceleration and shock structure associated with an unmagnetized relativistic jet propagating into plasma. Strong magnetic fields generated in the trailing contribute to electrons transverse deflection acceleration. have calculated, self-consistently, radiation from accelerated these turbulent fields. found that synthetic spectra depend on bulk Lorentz factor of jet, its temperature strength also strong by kinetic shear (Kelvin-Helmholtz) instabilities. The...
Abstract We study the interaction of relativistic jets with their environment, using 3-dimen- sional particle-in-cell simulations for two cases jet composition: (i) electron-proton ( e − p + ) and (ii) electron-positron ± plasmas containing helical magnetic fields. have performed “global” fields in order to examine how affect kinetic instabilities such as Weibel instability, Kelvin-Helmholtz instability Mushroom instability. found that these are suppressed new types can grow. For jet, a...
In the study of relativistic jets one key open questions is their interaction with environment on microscopic level. Here, we initial evolution both electron–proton (e- - p+) and electron–positron (e±) containing helical magnetic fields, focusing an ambient plasma. We have performed simulations "global" fields in order to examine how affect kinetic instabilities such as Weibel instability, Kelvin-Helmholtz instability (kKHI) Mushroom (MI). our simulation these...
We have investigated particle acceleration and emission from shocks shear flows associated with an unmagnetized relativistic jet plasma propagating into ambient plasma. Strong electro-magnetic fields are generated in the shock via filamentation (Weibel) instability. Shock field strength structure depend on composition (($e^{\pm}$ or $e^-$- $p^+$ plasmas) Lorentz factor. In velocity between plasmas, strong AC ($e^{\pm}$ DC ($e^-$- magnetic kinetic Kelvin-Helmholtz instability (kKHI), also...
We have investigated particle acceleration and shock structure associated with an unmagnetized relativistic jet propagating into plasma for electron-positron electron-ion plasmas. Strong magnetic fields generated in the trailing lead to transverse deflection of electrons. self-consistently calculated radiation from electrons accelerated turbulent different Lorentz factors. find that synthetic spectra depend on bulk factor jet, temperature, strength shock. generation velocity shear between...
The properties of relativistic jets, their interaction with the environment, and emission radiation can be self-consistently studied by using particle-in-cell (PIC) numerical simulations. Using three-dimensional (3D), PIC simulations, we present first calculated synthetic spectra head-on off-axis from electrons accelerated in cylindrical, plasma jets containing an initial toroidal magnetic field. jet particles are initially during linear stage growing instabilities, which Weibel instability...