A5043450205- Solar and Space Plasma Dynamics
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- Particle Detector Development and Performance
- Astro and Planetary Science
- Particle physics theoretical and experimental studies
- Solar Radiation and Photovoltaics
- Gamma-ray bursts and supernovae
- Geomagnetism and Paleomagnetism Studies
- Atomic and Subatomic Physics Research
- earthquake and tectonic studies
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Solar Thermal and Photovoltaic Systems
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- Atmospheric Ozone and Climate
- Astronomical Observations and Instrumentation
- High-Energy Particle Collisions Research
- Pulsars and Gravitational Waves Research
- Cosmology and Gravitation Theories
- Spacecraft and Cryogenic Technologies
- Scientific Computing and Data Management
Agenzia Spaziale Italiana
2019-2025
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2015-2024
University of Rome Tor Vergata
2015-2024
Istituto Nazionale di Fisica Nucleare
2013-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2015-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
2017-2021
Politecnico di Milano
2021
Institute for Physics
2020
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2017
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2017
Precision measurements of the positron component in cosmic radiation provide important information about propagation rays and nature particle sources our Galaxy. The satellite-borne experiment PAMELA has been used to make a new measurement cosmic-ray flux fraction that extends previously published up 300 GeV kinetic energy. combined energy spectrum unique tool constrain interpretation models. During recent solar minimum activity period from July 2006 December 2009 approximately 24500...
Precision measurements of the electron component in cosmic radiation provide important information about origin and propagation rays Galaxy not accessible from study cosmic-ray nuclear components due to their differing diffusion energy-loss processes. However, when measured near Earth, effects modulation galactic heliosphere, particularly significant for energies up at least 30 GeV, must be properly taken into account. In this paper (e^-) spectra by PAMELA down 70 MeV July 2006 December 2009...
The propagation of cosmic rays inside our galaxy plays a fundamental role in shaping their injection spectra into those observed at Earth. One the best tools to investigate this issue is ratio fluxes for secondary and primary species. boron-to-carbon (B/C) ratio, particular, sensitive probe mechanisms. This paper presents new measurements absolute boron carbon nuclei, as well B/C from PAMELA space experiment. results span range 0.44 - 129 GeV/n kinetic energy data taken period July 2006 March 2008.
Precise measurements of the time-dependent intensity low energy ($<50$ GeV) galactic cosmic rays are fundamental to test and improve models which describe their propagation inside heliosphere. Especially, data spanning different solar activity periods, i.e. from minimum maximum, needed achieve comprehensive understanding such physical phenomenon. The phase between 23$^{rd}$ 24$^{th}$ cycles was peculiarly long, extending up beginning 2010 followed by maximum phase, reached during early 2014....
Abstract The China Seismo-Electromagnetic Satellite ( CSES ) aims to monitor electromagnetic, particle, and plasma perturbations in the iono-magnetosphere inner Van Allen radiation belts originated by electromagnetic sources external internal geomagnetic cavity, cosmic rays, solar events. In particular, objective of space mission is investigate lithosphere–atmosphere–ionosphere coupling mechanisms (including effects lightning, earthquakes, volcanoes, artificial emissions) that induce top...
ABSTRACT The cosmic-ray hydrogen and helium ( 1 H, 2 3 He, 4 He) isotopic composition has been measured with the satellite-borne experiment PAMELA , which was launched into low-Earth orbit on board Resurs-DK1 satellite 2006 June 15. rare isotopes H He in cosmic rays are believed to originate mainly from interaction of high-energy protons galactic interstellar medium. between 100 1100 MeV/n for 1400 using two different detector systems over 23rd solar minimum July 2007 December.
Abstract High-energy, long gamma-ray bursts (GRBs) can be generated by the core collapse of massive stars at end their lives. When they happen in close-by universe exceptionally bright, as seen from Earth case recent, giant, long-lasting GRB221009A. GRB221009A was produced a collapsing star with redshift 0.152: this event observed many space experiments, which also detected an extraordinary afterglow. The large fluence prompt emission about 0.013 erg cm −2 illuminated geographical region...
The South Atlantic Anomaly (SAA) is a region where the Earth's magnetic field lower by factor of 2–3 with respect to mean value, resulting in remarkably higher density trapped charged particles. Updated surveys this unique are capital importance track evolution geomagnetic and improve models ionosphere. High-Energy Particle Detector (HEPD-01) on board China Seismo-Electromagnetic Satellite (CSES-01), operational between 24th 25th Solar cycles, one few instruments able probe radiation...
Abstract The High-energy Particle Detector (HEPD) on board the China Seismo-Electromagnetic Satellite (CSES-01)—launched 2018 February 2—is a light and compact payload suitable for measuring electrons (3–100 MeV), protons (30–250 nuclei (up to few hundreds of MeV). Sun-synchronous orbit large acceptance allow HEPD measure cosmic-ray particles near ±65° latitude limit fair amount time per day. In this work, three semiannual galactic hydrogen energy spectra between ∼40 250 MeV are presented,...
Abstract Time-dependent energy spectra of galactic cosmic rays (GCRs) carry crucial information regarding their origin and propagation throughout the interstellar environment. When observed at Earth, after traversing interplanetary medium, such are heavily affected by solar wind embedded magnetic field permeating inner sectors heliosphere. The activity Sun changes significantly over an 11 yr cycle—and so does effect on particles; this translates into a phenomenon called modulation. Moreover,...
Abstract Despite the significant progress achieved in recent years, physical mechanisms underlying origin of solar energetic particles (SEPs) are still a matter debate. The complex nature both particle acceleration and transport poses challenges to developing universal picture SEP events that encompasses low-energy (from tens keV few hundreds MeV) observations made by space-based instruments GeV detected worldwide network neutron monitors ground-level enhancements (GLEs). high-precision data...
Precise time-dependent measurements of the Z = 2 component in cosmic radiation provide crucial information about propagation charged particles through heliosphere. The PAMELA experiment, with its long flight duration (15th June 2006 - 23rd January 2016) and low energy threshold (80 MeV/n) is an ideal detector for ray solar modulation studies. In this paper, helium nuclei spectra measured by instrument from July to December 2009 over a Carrington rotation time basis are presented. A...
On 25 August 2018, a G3-class geomagnetic storm reached the Earth’s magnetosphere, causing transient rearrangement of charged particle environment around planet, which was detected by High-Energy Particle Detector (HEPD) on board China Seismo-Electromagnetic Satellite (CSES-01). We found that count rates electrons in MeV range were characterized depletion during storm’s main phase and clear enhancement recovery caused large substorm activity, with key role played auroral processes mapped...
Abstract In this work we present the High‐Energy Particle Detector (HEPD‐01) observations of proton fluxes from space during 28 October 2021 solar energetic particle event, which produced a ground‐level enhancement on Earth. The event was associated with major, long‐duration X1‐class flare and concomitant coronal mass ejection (CME) that erupted Active Region 12887. This is first direct measurement particles emitted current cycle, recorded by single instrument in energy range ∼50 MeV/n up to...
Abstract Time-dependent energy spectra of galactic cosmic rays (GCRs) carry fundamental information regarding their origin and propagation. When observed at the Earth, these are significantly affected by solar wind embedded magnetic field that permeates heliosphere, changing over an 11 yr cycle. Energy GCRs measured during different epochs activity provide crucial for a thorough understanding heliospheric phenomena. The PAMELA experiment collected data almost 10 years (2006 June 15–2016...
Abstract New results on the short-term galactic cosmic-ray (GCR) intensity variation (Forbish decrease) in 2006 December measured by PAMELA instrument are presented. Forbush decreases sudden suppressions of GCR intensities, which associated with passage interplanetary transients such as shocks and coronal mass ejections (ICMEs). Most past measurements this phenomenon were carried out ground-based detectors neutron monitors or muon telescopes. These techniques allow only indirect detection...
Abstract We present a precise measurement of downward going albedo proton fluxes for kinetic energy above ∼70 MeV performed by the Payload Antimatter Matter Exploration and Light‐nuclei Astrophysics (PAMELA) experiment at an altitude between 350 610 km. On basis trajectory tracing simulation, analyzed protons were classified into quasi‐trapped, concentrating in magnetic equatorial region, untrapped spreading over all latitudes, including both short‐lived (precipitating) long‐lived...
The High-Energy Particle Detector (HEPD) on board the China Seismo-Electromagnetic Satellite (CSES-01) was launched in February 2018, with a foreseen mission lifetime of over 5 years. It is providing crucial new insight physical dynamics radiation belts Earth's magnetosphere, particular South Atlantic Anomaly (SAA). In this work, proton data from HEPD 40 MeV--250 MeV energy range, collected inside SAA during period between August 2018 and December 2020, are presented compared up-to-date AP9...