196 citations · 987 across the 49 of their papers we have counts for
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Understanding variations of galactic energetic particles in the heliosphere: modelling and radiation hazard assessment
Miguel Orcinha, Fernando Barão, Bruna Bertucci +3
The intensity and energy spectrum of energetic charged radiation in the heliosphere are significantly influenced by solar activity. This phenomenon is known as solar modulation of…
Propagation Times and Energy Losses of Cosmic Protons and Antiprotons in Interplanetary Space
Nicola Tomassetti, Bruna Bertucci, Emanuele Fiandrini +1
In this paper, we investigate the heliospheric modulation of cosmic rays in interplanetary space, focusing on their propagation times and energy losses over the solar cycle. To per…
Data driven analysis of cosmic rays in the heliosphere: diffusion of cosmic protons
N. Tomassetti, E. Fiandrini, B. Bertucci +4
Understanding the time-dependent relationship between the Sun's variability and cosmic rays (GCR) is essential for developing predictive models of energetic radiation in space. Whe…
Direct Measurements of Galactic Cosmic Rays
Nicola Tomassetti
This paper reviews recent progress in the field of direct measurements of Galactic cosmic rays. High-statistic measurements of cosmic ray energy spectra, chemical and isotopic comp…
Data driven analysis of Galactic cosmic rays in the heliosphere: diffusion of cosmic protons and nuclei
Nicola Tomassetti, Bruna Bertucci, Federico Donnini +4
Galactic cosmic rays (GCRs) inside the heliosphere are affected by magnetic turbulence and Solar wind disturbances which result in the so-called solar modulation effect. To investi…
Numerical modeling of cosmic rays in the heliosphere: Analysis of proton data from AMS-02 and PAMELA
Emanuele Fiandrini, Nicola Tomassetti, Bruna Bertucci +4
Galactic cosmic rays (CRs) inside the heliosphere are affected by solar modulation. To investigate this phenomenon and its underlying physical mechanisms, we have performed a data-…
New results in solar modulation modeling in light of recent cosmic-ray data from space
Bruna Bertucci, Emanuele Fiandrini, Behrouz Khiali +1
Thanks to space-borne experiments such as the AMS-02 and PAMELA missions in low-Earth orbit, along with the Voyager spacecrafts in the interstellar space, a large collection of mul…
Time lag in cosmic-ray modulation and global properties of the Solar Cycle
Bruna Bertucci, Emanuele Fiandrini, Behrouz Khiali +1
When entering the heliosphere, Galactic cosmic rays (GCRs) are influenced by magnetic turbulence and Solar wind disturbances, which cause the so-called "solar modulation" effect. U…
Numerical modeling of cosmic-ray transport in the heliosphere and interpretation of the proton-to-helium ratio in Solar Cycle 24
Nicola Tomassetti, Fernando Barão, Bruna Bertucci +2
Thanks to space-borne experiments of cosmic-ray (CR) detection, such as the AMS and PAMELA missions in low-Earth orbit, or the Voyager-1 spacecraft in the interstellar space, a lar…
Testing diffusion of cosmic rays in the heliosphere with proton and helium data from AMS
Nicola Tomassetti, Fernando Barão, Bruna Bertucci +4
After six years of continuous observations in space, the Alpha Magnetic Spectrometer experiment has released new data on the temporal evolution of the proton and helium fluxes in c…
Observation of a time lag in solar modulation of cosmic rays in the heliosphere
Miguel Orcinha, Nicola Tomassetti, Fernando Barão +1
The solar modulation effect of Galactic cosmic rays is a time-dependent phenomenon that is caused by the transport of these particles through the magnetized plasma of the heliosphe…
Solar Modulation of Galactic Cosmic Rays: Physics Challenges for AMS-02
Nicola Tomassetti
The Alpha Magnetic Spectrometer (AMS) is a new generation high-energy physics experiment installed on the International Space Station in May 2011 and operating continuously since t…
Production of cosmic-ray antinuclei in the Galaxy and background for dark matter searches
Nicola Tomassetti, Alberto Oliva
Antimatter nuclei in cosmic rays (CR) represent a promising discovery channel for the indirect search of dark matter. We present astrophysical background calculations of CR antideu…
Fresh Insights on Cosmic-ray Propagation from the New AMS Data
Nicola Tomassetti, Jie Feng, Alberto Oliva
The Alpha Magnetic Spectrometer (AMS) experiment has released new measurements of primary and secondary nuclei in cosmic rays at the TeV energy scale. Using these data, we present…
Secondary antinuclei from supernova remnants and background for dark matter searches
Nicola Tomassetti, Alberto Oliva
We compute the spectra of cosmic-ray (CR) nuclei and antinuclei under a scenario where hadronic interaction processes inside supernova remnants (SNRs) can produce a diffusively-sho…
Production of antimatter nuclei in Galactic cosmic rays
Alberto Oliva, Nicola Tomassetti, Jie Feng
Antimatter nuclei in cosmic rays (CRs) are a promising tool for the indirect detection of dark-matter annihilation signatures. However, the search of new-physics signals in CRs rel…
Solar and nuclear physics uncertainties in cosmic-ray propagation
Nicola Tomassetti
Recent data released by the AMS experiment on the primary spectra and secondary-to-primary ratios in cosmic rays (CRs) can pose tight constraints to astrophysical models of CR acce…
Evidence for a Time Lag in Solar Modulation of Galactic Cosmic Rays
Nicola Tomassetti, Miguel Orcinha, Fernando Barao +1
The solar modulation effect of cosmic rays in the heliosphere is an energy-, time-, and particle-dependent phenomenon which arises from a combination of basic particle transport pr…
Production and acceleration of antinuclei in supernova shockwaves
Nicola Tomassetti, Alberto Oliva
We compute the energy spectra of antideuterons and antihelium in cosmic rays (CRs) in a scenario where hadronic interactions inside supernova remnants (SNRs) can produce a diffusiv…
Precision measurement of the (e + e) flux in primary cosmic rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station
Manuela Vecchi
We present a precise measurement of the combined electron plus positron flux from 0.5 GeV to 1 TeV, based on the analysis of the data collected by the Alpha Magnetic Spectrometer d…
Precision Measurement of the Proton Flux in Primary Cosmic Rays from 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station
Cristina Consolandi
A precision measurement of the proton flux in primary cosmic rays with rigidity from 1 GV to 1.8 TV is presented based on 300 million events. The results show that the proton flux…
Bayesian analysis of cosmic-ray propagation parameters: secondary antiparticles from spatial-dependent diffusion models
Jie Feng, Nicola Tomassetti, Alberto Oliva
The antiparticle energy spectra of Galactic cosmic rays (CRs) have several exciting features such as the unexpected positron excess at 10-200\,GeV and the remarkably hard an…
The curious case of high-energy deuterons in Galactic cosmic rays
Nicola Tomassetti, Jie Feng
A new analysis of cosmic ray (CR) data collected by the SOKOL experiment in space found that the deuteron-to-helium ratio at energies between 500 and 2000 GeV/nucleon takes the val…
Testing universality of cosmic-ray acceleration with proton/helium data from AMS and Voyager-1
Nicola Tomassetti
The AMS experiment has recently measured the proton and helium spectra in cosmic rays (CRs) in the GeV-TeV energy region. The two spectra are found to progressively harden at rigid…