A5082420243- Solar and Space Plasma Dynamics
- Real-Time Systems Scheduling
- Spacecraft Design and Technology
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Radiation Effects in Electronics
- Embedded Systems Design Techniques
- Particle Detector Development and Performance
- Parallel Computing and Optimization Techniques
- Distributed systems and fault tolerance
- Radiation Detection and Scintillator Technologies
- Robotic Path Planning Algorithms
- Advanced Software Engineering Methodologies
- Dark Matter and Cosmic Phenomena
- VLSI and Analog Circuit Testing
- Model-Driven Software Engineering Techniques
- Gamma-ray bursts and supernovae
- Distributed and Parallel Computing Systems
- Nuclear Physics and Applications
- Reinforcement Learning in Robotics
- Radiation Therapy and Dosimetry
- Astrophysics and Cosmic Phenomena
- solar cell performance optimization
- Atmospheric Ozone and Climate
- Engineering and Information Technology
Universidad de Alcalá
2015-2024
Pontificia Universidad Javeriana
2013-2023
Universidad El Bosque
2023
Fachhochschule Kiel
2021
Kiel University
2021
Universitat de Barcelona
2021
Johannes Gutenberg University Mainz
2009-2018
Institute for Theoretical and Experimental Physics
2009
After decades of observations solar energetic particles from space-based observatories, relevant questions on particle injection, transport, and acceleration remain open. To address these scientific topics, accurate measurements the properties in inner heliosphere are needed. In this paper we describe Energetic Particle Detector (EPD), an instrument suite that is part payload aboard Solar Orbiter mission. will approach Sun as close 0.28 au provide extra-ecliptic beyond ∼30° heliographic...
Context. On 2020 November 29, the first widespread solar energetic particle (SEP) event of cycle 25 was observed at four widely separated locations in inner (≲1 AU) heliosphere. Relativistic electrons as well protons with energies > 50 MeV were by Solar Orbiter (SolO), Parker Probe, Terrestrial Relations Observatory (STEREO)-A and multiple near-Earth spacecraft. The SEP associated an M4.4 class X-ray flare accompanied a coronal mass ejection extreme ultraviolet (EUV) wave type II radio...
Solar Orbiter strives to unveil how the Sun controls and shapes heliosphere fills it with energetic particle radiation. To this end, its Energetic Particle Detector (EPD) has now been in operation, providing excellent data, for just over a year. EPD measures suprathermal particles energy range from few keV up (near-) relativistic energies (few MeV electrons about 500 MeV/nuc ions). We present an overview of initial results first year operations we provide assessment issues limitations....
Context. Solar Orbiter, launched in February 2020, started its cruise phase June coincidence with first perihelion at 0.51 au from the Sun. The situ instruments onboard, including Energetic Particle Detector (EPD), operate continuously during enabling observation of solar energetic particles. Aims. In measurements near-relativistic electron events observed July 2020 by EPD are analyzed and origins conditions for interplanetary transport these particles investigated. Methods. Electron...
SUMMARY The aim of this work has been the implementation and testing in real conditions a new algorithm based on cell-mapping techniques reinforcement learning methods to obtain optimal motion planning vehicle considering kinematics, dynamics obstacle constraints. is an extension control adjoining cell mapping technique for instead using its analytical state equations. It uses transformation cell-to-cell order reduce time spent during stage. Real experimental results are reported show...
Aims. We present observations of the first coronal mass ejection (CME) observed by Solar Orbiter spacecraft on April 19, 2020 and associated Forbush decrease (FD) measured High Energy Telescope (HET). This CME is a multi-spacecraft event that was also seen near Earth following day. Methods. highlight capabilities HET for observing small short-term variations galactic cosmic ray count rate using its single detector counters. applied analytical ForbMod model to FD measurements reproduce at...
The first orbit of Solar Orbiter provided comprehensive measurements six corotating interaction regions (CIRs) within 1 au. Five these CIRs were also observed by ACE at au, allowing for comparisons the suprathermal ion intensities and spectra different radial distances. Only subtle modulations 4 He spectral slopes are between ACE. Additionally, gradients 226−320 keV/nuc similar to that 1.53 MeV H reported Van Hollebeke et al. (1978, J. Geophys. Res., 83, A10). These observations provide a...
We report observations of five impulsive solar energetic particle (SEP) events observed inside 1 au during the first perihelion pass Solar Orbiter mission, which was launched in February 2020. These small were all reasonably associated with active regions from Earth but had rotated out view by time observations. Even though most small, their spectral forms, 3 He content, and association type III bursts convincingly identifies them as He-rich SEP properties similar to those previously at au....
Context. Following a multi-year minimum of solar activity, energetic particle event on 2020 Nov. 29 was observed by multiple spacecraft covering wide range longitudes including ACE, the Solar Terrestrial Relations Observatory-A, and recently launched Parker Probe Orbiter. Aims. Multi-point observations event, combined with remote-sensing imaging flaring, shocks, coronal mass ejections allows for global picture to be synthesized, made available modeling community test, constrain, refine...
We report observations of a relatively long period 3 He-rich solar energetic particles (SEPs) measured by Solar Orbiter. The consists several well-resolved ion injections. high-resolution STEREO-A imaging reveal that the injections coincide with extreme ultraviolet jets and brightenings near east limb, not far from nominal magnetic connection originated in two adjacent, large, complex active regions, as observed Dynamics Observatory when regions rotated into Earth’s view. It appears...
The LEGO Mindstorms kit is widely used in many areas of education and research, covering a number applications from benchtop demonstrations to postgraduate laboratories, projects [1][3]. Although the was initially designed as toy for children over 12 years age, its use university courses increasing yearly. has attracted interest people working areas, including artificial intelligence, embedded systems, control robotics, operating systems. inexpensive, easily reconfigurable, reprogrammable,...
In addition to functional simulation for validation of hardware/software designs, there are additional robustness requirements that need advanced techniques and tools analyze the system behavior in presence faults. this paper, we present design a fault injection framework LEON3, 32bit SPARC CPU based used by European Space Agency, described at Transaction Level using System C. First all an extension previous XML formalization basic binary faults, like memory registers corruption, is done...
The Solar Orbiter flyby of Venus on 27 December 2020 allowed for an opportunity to measure the suprathermal energetic ions in Venusian system over a large range radial distances better understand acceleration processes within and provide characterization galactic cosmic rays near planet. Bursty ion enhancements (up ∼10 keV) were observed as far ∼50 R V downtail. These are likely related combination mechanisms regions strong turbulence, current sheet crossings, boundary layer with possible...
The ability to collect statistics about the execution of a program within CPU is utmost importance across all fields computing since it allows characterizing timing performance program. This capability even more relevant in safety-critical software systems, where mandatory analyze requirements ensure correct operation programs. Moreover, order properly evaluate and verify extra-functional properties these besides performance, there are many other available on CPU, such as those associated...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The aim of this work has been to integrate the Cartesian space together with kinematics and dynamics spaces a car-like robot. We propose new algorithm that obtains minimum-time solution optimal motion planning vehicle. is based on combination cell-mapping reinforcement-learning techniques. This can obtain environment vehicle parameters from received experience without needing mathematical model....
Transaction Level Modelling (TLM) has been widely accepted as systems modelling framework focused in system components communication. This approach allows efficient accurate estimation and rapid design space exploration. Besides of the functional simulation for validation a hardware/software designs, there are additional reliability requirements that need advanced techniques to analyze behaviour presence faults. Several traditional VHDL fault injection mechanisms like mutants or saboteurs...
This paper presents a framework designed to work with multi platform approach over two levels of definition an embedded system built from software components. In the upper level, focuses on composition components and analysis extra-functional properties following principles compositionality composability. lower provides packaging model aimed automate tasks configuration construction executable out bundles that constitute components' implementation. For both levels, introduces concept as new...
Context. The Solar Orbiter spacecraft cruised in the inner heliosphere during Feb. 2020 – Jan. 2021, moving between ∼0.5–1.0 au radial distance. Energetic Particle Detector suite operated continuously this period. Aims. Suprathermal Ion Spectrograph and High Energy Telescope observations made intervals transient intensity increases were used to determine low energy ion spectra composition quiet times. Methods. particle major components, including 3 He, measured over range ∼0.1–100 MeV...