A5107354884- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Gamma-ray bursts and supernovae
- Precipitation Measurement and Analysis
- Atmospheric Ozone and Climate
- Radiation Therapy and Dosimetry
- Pulsars and Gravitational Waves Research
- Theoretical and Computational Physics
- Physics of Superconductivity and Magnetism
- Atmospheric aerosols and clouds
- Ionosphere and magnetosphere dynamics
- Radio Wave Propagation Studies
- Computational Physics and Python Applications
- Atmospheric and Environmental Gas Dynamics
- Photocathodes and Microchannel Plates
- History and Developments in Astronomy
- Lightning and Electromagnetic Phenomena
- Quantum many-body systems
- Earthquake Detection and Analysis
- Electromagnetic Compatibility and Measurements
Consejo Nacional de Investigaciones Científicas y Técnicas
2016-2025
Universidad Nacional de La Plata
2016-2025
Institute of Astronomy and Space Physics
2010-2023
University of Buenos Aires
2010-2023
Instituto de Tecnologías en Detección y Astropartículas
2021-2023
National University of General San Martín
2021-2023
National Technological University
2010-2023
Pierre Auger Observatory
2010-2023
Institute of Scientific and Technical Research for Defense
2021-2023
Instituto de Física La Plata
2005-2023
The AIRES (AIR-shower Extended Simulations) system is a set of programs and subroutines to realistically simulate particle showers produced after the incidence high energy cosmic rays on Earth's atmosphere, manage all related output data. current version includes series improvements with respect previous releases that are explained in detail this manual and/or web site aires.fisica.unlp.edu.ar from where software can be downloaded. Among such improvements, it worth mentioning: (i) High...
Venus' atmosphere -- specifically its clouds buoyed up 40 to 60 km above the surface has long been suspected encompass a biosphere where Earth-like living organisms could grow and flourish. This idea recently rekindled by observation (signal-to-noise ratio of about 15$\sigma$) phosphine (PH$_3$) absorption-line profile against thermal background from deeper, hotter layers atmosphere. There is chance that this be sign life, because PH$_3$ gas observed on Earth originates mostly in decaying...
An analysis of the influence Landau-Migdal-Pomeranchuk (LPM) effect on development air showers initiated by astroparticles is presented. The theory Migdal studied and compared with other theoretical methods, particularly Blankenbecler-Drell approach. By means realistic computer simulations using algorithms that emulate Migdal's theory, including also so-called dielectric suppression, we study behavior relevant observables in case ultrahigh energy primaries. We find LPM can significantly...
Recently, the ALICE Collaboration reported an enhancement of yield ratio strange and multi-strange hadrons to charged pions as a function multiplicity at mid-rapidity in proton-proton, proton-lead, lead-lead, xenon-xenon scattering. observations provide strong indication that quark-gluon plasma is partly formed high events both small large colliding systems. Motivated by ALICE's results, we propose new test for hadronic interaction models used analyzing ultra-high-energy-cosmic-ray (UHECR)...
The influence of the geomagnetic field on development air showers is studied. well known International Geomagnetic Reference Field was included in AIRES shower simulation program as an auxiliary tool to allow calculation very accurate estimations given geographic coordinates, altitude above sea level and date a event. Our simulations indicate that deflections significantly alter some observables such as, for example, lateral distribution muons case events with large zenith angles (larger...
Cosmic Probes of Fundamental Physics take two primary forms: Very high energy particles (cosmic rays, neutrinos, and gamma rays) gravitational waves. Already today, these probes give access to fundamental physics not available by any other means, helping elucidate the underlying theory that completes Standard Model. The last decade has witnessed a revolution exciting discoveries such as detection high-energy neutrinos scope for major developments in next decades is dramatic, we detail this report.
A comparative analysis of the secondary particles output main hadronic interaction packages used in simulations extensive air showers is presented. Special attention given to study events with very energetic leading particles, including diffractive interactions.
The objective of this work is to report on the influence muon interactions development air showers initiated by astroparticles. We make a comparative study different theoretical approaches bremsstrahlung and muonic pair production interactions. A detailed algorithm that includes all relevant characteristics such processes has been implemented in AIRES shower simulation system. have simulated ultrahigh energy conditions order measure these electromagnetic found during late stages (well beyond...
A comparative study of commonly used hadronic collision simulation packages is presented. The characteristics the products hadron-nucleus collisions are analyzed from a general perspective, but focusing on their correlation with diffractive processes. One purposes our work to give quantitative estimations impact that different models have air shower observables. Several sets simulations using settings for parameters controlling processes analyze correlations between diffractivity and We find...
Eventual signals of split supersymmetry in cosmic ray physics are analyzed detail. The study focuses particularly on quasistable colorless $R$-hadrons originating from confinement long-lived gluinos (with quarks, antiquarks, and gluons) produced $pp$ collisions at astrophysical sources. Because parton density requirements, the gluino has a momentum which is considerably smaller than energy primary proton, so production heavy (mass $\ensuremath{\sim}500\text{ }\text{ }\mathrm{GeV}$) requires...
We investigate the observed muon deficit in air shower simulations when compared to ultrahigh-energy cosmic ray (UHECR) data. Gleaned from enhancement of strangeness production ALICE data, associated $\pi \leftrightarrow K$ swap is taken as a cornerstone resolve puzzle via its corresponding impact on evolution. develop phenomenological model terms swapping probability $F_s$. provide parametrization $F_s (E^{\rm (proj)}, \eta)$ that can accommodate UHECR where $E^{\rm (proj)}$ projectile...
A comprehensive study of the shape discrete random walks, considering general case arbitrary length and any space dimension, is presented. The probability distributions for several magnitudes such as principal inertia moments, asphericity angle between axis end-to-end vector are evaluated numerically. In most cases, especially in low-dimensional spaces, these spread widely possess a non-zero skewness. This implies that description shapes walks which based only on mean values related...
An exhaustive analysis of the shape properties discrete self-avoiding random walks is presented. The dependence main parameters probability distributions from length walk and differences between these for conventional are studied. By means high-precision Monte Carlo simulations it shown that characteristics walks, when regarded as a function length, present expected asymptotic behaviour. with depend upon observable considered: principal inertia eigenvalues spread around most probable value...
A study of some features the quantities used to describe shape random walks, focusing on probability distribution asphericity discrete walks in two dimensions, is presented. connection established between and corresponding ratio principal inertia moments. The distributions arbitrary moment ratios are analysed for varying spatial dimension, an analytic expression them found which presents excellent agreement with Monte Carlo data all cases considered. This function then obtain two-dimensional...
In this paper we study the sensitivity of flux atmospheric muons to uncertainties in primary cosmic ray spectrum and treatment geomagnetic field. We use air shower simulation program AIRES make calculation for two different spectra under several approximations propagation charged particles The results illustrate importance accurate modeling field effects. propose a high low fit proton helium fluxes, calculate muon fluxes with these inputs. Comparison measurements by CAPRICE experiment shows...
Monthly averages of the sunspot number visible on sun, observed from 1749, Zurich Observatory, and 1848 other observatories, have been analyzed. This time signal presents a frequency power spectra with clear 1/f α behavior α≃0.8±0.2. The well-known cycle approximately 11 years, clearly present in spectrum, does not produce sensible distortion that behavior. eventual characterization series as fractal is analyzed by means detrended fluctuation analysis (DFA). jump-size distribution also studied.