A5027572598- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Astrophysics and Cosmic Phenomena
- Geomagnetism and Paleomagnetism Studies
- Stellar, planetary, and galactic studies
- Dark Matter and Cosmic Phenomena
- Earthquake Detection and Analysis
- Gamma-ray bursts and supernovae
- Precipitation Measurement and Analysis
- Astrophysics and Star Formation Studies
- GNSS positioning and interference
- Particle Detector Development and Performance
University of Buenos Aires
2014-2020
Fundación Ciencias Exactas y Naturales
2015-2020
Institute of Astronomy and Space Physics
2013
Bariloche Atomic Centre
2011
Consejo Nacional de Investigaciones Científicas y Técnicas
2011
Interplanetary coronal mass ejections (ICMEs) are the interplanetary manifestations of solar eruptions. The overtaken wind forms a sheath compressed plasma at front ICMEs. Magnetic clouds (MCs) subset ICMEs with specific properties (e.g. presence flux rope). When pass near Earth, ground observations indicate that galactic cosmic rays (GCRs) decreases. main aims this paper to find: common and magnetic different ICME sub-structures, which affect GCRs Earth. We use superposed epoch method...
Abstract Interplanetary coronal mass ejections (ICMEs) are the manifestation of solar transient eruptions, which can significantly modify plasma and magnetic conditions in heliosphere. They often preceded by a shock, flux rope is detected situ third to half them. The main aim this study obtain best quantitative shape for axis shock surface from data obtained during spacecraft crossings these structures. We first compare orientation axes normals independent analyses same events, observed at 1...
Interplanetary imagers provide 2D projected views of the densest plasma parts interplanetary coronal mass ejections (ICMEs) while in situ measurements magnetic field and parameter along spacecraft trajectory, so a 1D cut. As such, data only give partial view their 3D structures. By studying large number ICMEs, crossed at different distances from apex, we develop statistical methods to obtain quantitative generic shape ICMEs. In first approach theoretically expected distribution shock-normal...
Magnetic clouds (MCs) are large-scale interplanetary transient structures in the heliosphere that travel from Sun into medium. The internal magnetic field lines inside MCs twisted, forming a flux rope (FR). This structuring is determined by its initial solar configuration, processes involved during eruption Sun, and dynamical evolution interaction with ambient wind. One of most important properties structure twist FR (the number turns per unit length). detailed distribution under debate...
The geomagnetic field (Bgeo) sets a lower cutoff rigidity (Rc) to the entry of cosmic particles Earth which depends on activity. From numerical simulations trajectory proton using different models for Bgeo (performed with MAGCOS code), we use backtracking analyze arriving at location two nodes net LAGO (Large Aperture Gamma ray burst Observatory) that will be built in near future: Buenos Aires and Marambio (Antarctica), Argentina. We determine asymptotic trajectories values Rc incidence...
The Latin American Giant Observatory (LAGO) is an extended cosmic ray observatory composed by a network of water-Cherenkov detectors spanning over different sites located at significantly altitudes (from sea level up to more than $5000$\,m a.s.l.) and latitudes across America, covering huge range geomagnetic rigidity cut-offs atmospheric absorption/reaction levels. This detection designed measure the temporal evolution radiation flux ground with extreme detail. LAGO project mainly oriented...
Abstract The geomagnetic field ( B geo ) sets a lower cutoff rigidity R c to the entry of cosmic particles Earth which depends on activity. From numerical simulations trajectory proton (performed with MAGCOS code) in , we use backtracking analyze arriving at Auger Observatory location. We determine asymptotic trajectories and values different incidence directions. Simulations were done using several models that emulate conditions.
Abstract Sudden Galactic Cosmic Ray (GCR) intensity decreases are related to the passage of Interplanetary Coronal Mass Ejections (ICMEs). These phenomena also known as Forbush Decreases (FDs). The deepest FDs associated with Magnetic Clouds (MCs). In this preliminary study we select “non-interacting” MCs observed from ground Neutron Monitors in period 1996-2009, aim reducing complexity and number parameters involved GCR-MC interactions. We introduce a method determine properties “ ejecta...
Interplanetary Coronal Mass Ejections are the manifestation of solar transient eruptions, which can significantly modify plasma and magnetic conditions in heliosphere. They often preceded by a shock, flux rope is detected situ third to half them. The main aim this study obtain best quantitative shape for axis shock surface from data obtained during spacecraft crossings these structures. We first compare orientation ropes axes normals independent analyses same events, observed at 1AU Sun....