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Fundamental atomic parameters, such as oscillator strengths, play a key role in modelling and understanding the chemical composition of stars in the universe. Despite the significant work underway to produce these parameters for many…

Solar and Stellar Astrophysics · Physics 2018-04-25 Mike Laverick , Alex Lobel , Thibault Merle , Pierre Royer , Christophe Martayan , Marc David , Herman Hensberge , Emmanuel Thienpont

Using the updated proton and helium fluxes just released by the AMS-02 experiment we reevaluate the secondary astrophysical antiproton to proton ratio and its uncertainties, and compare it with the ratio preliminarly reported by AMS-02. We…

High Energy Astrophysical Phenomena · Physics 2015-09-30 Gaëlle Giesen , Mathieu Boudaud , Yoann Genolini , Vivian Poulin , Marco Cirelli , Pierre Salati , Pasquale D. Serpico

The precision measurements of the spectra of cosmic ray nuclei and leptons in recent years have revealed the existence of multiple features, such as the spectral break at $\sim 300$ GV rigidity seen by PAMELA and AMS-02 and more recently…

High Energy Astrophysical Phenomena · Physics 2022-01-05 Carmelo Evoli , Elena Amato , Pasquale Blasi , Roberto Aloisio

We briefly review the improvements in the predictions of atmospheric neutrino fluxes since the NOW2000 workshop. In spite of the great progress in calculational technique the predictions are still not exact because of the uncertainties in…

Astrophysics · Physics 2011-05-12 Todor Stanev

We are constructing a model which aims to reproduce observational data of many kinds related to cosmic-ray origin and propagation: direct measurements of nuclei, antiprotons, electrons and positrons, gamma-rays, and synchrotron radiation.…

Astrophysics · Physics 2007-05-23 A. W. Strong , I. V. Moskalenko

This work studies the impact of systematic uncertainties associated to interaction cross sections on depth dose curves determined by Monte Carlo simulations. The corresponding sensitivity factors are quantified by changing cross sections in…

Medical Physics · Physics 2016-08-10 Eder Aguirre , Mario A. Bernal , Mariano David , Carlos E. deAlmeida

Precise measurements of the boron-to-carbon and boron-to-oxygen ratios by DAMPE show clear hardenings around $100$ GeV/n, which provide important implications on the production, propagation, and interaction of Galactic cosmic rays. In this…

High Energy Astrophysical Phenomena · Physics 2023-03-07 Peng-Xiong Ma , Zhi-Hui Xu , Qiang Yuan , Xiao-Jun Bi , Yi-Zhong Fan , Igor V. Moskalenko , Chuan Yue

In this review, we emphasize the interplay between astrophysical observations, modeling, and nuclear physics laboratory experiments. Several important nuclear cross sections for astrophysics have long been identified e.g.…

Nuclear Experiment · Physics 2016-05-26 Alain Coc , Fairouz Hammache , Juergen Kiener

The rise in the cosmic-ray positron fraction measured by the PAMELA satellite is likely due to the presence of astrophysical sources of positrons, e.g. pulsars, on the kpc scale around the Earth. Nevertheless, assessing the properties of…

High Energy Astrophysical Phenomena · Physics 2011-07-19 Julien Lavalle

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p ->…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. R. Cudell , V. V. Ezhela , P. Gauron , K. Kang , Yu. V. Kuyanov , S. B. Lugovsky , E. Martynov , B. Nicolescu , E. A. Razuvaev , N. P. Tkachenko

Hadron scattering and production uncertainties are a limiting systematic on accelerator and at-mospheric neutrino flux predictions. New hadron measurements are necessary for neutrino fluxpredictions with well-understood and reduced…

A precise simulation of muons with energies above a TeV is crucial for neutrino telescopes or cosmic ray experiments. To further increase the precision of these simulations, improved cross-section calculations are needed. At these energies,…

High Energy Physics - Phenomenology · Physics 2019-10-17 Jan Soedingrekso , Alexander Sandrock , Wolfgang Rhode

This paper seeks to find an explanation of the galactic cosmic ray B/C ratio newly measured in cosmic rays between ~10 MeV/nuc and 1 TeV/nuc. Voyager measurements of this ratio at low energies and AMS-2 measurements at high energies are…

Space Physics · Physics 2016-06-10 W. R. Webber , T. L. Villa

Determining the spatial distribution of Galactic cosmic rays (CRs) is fundamental to understand how these particles propagate in interstellar space and to infer their source spectra. The most sensitive method of studying this problem is…

High Energy Astrophysical Phenomena · Physics 2025-09-26 Paolo Lipari , Silvia Vernetto

This article reviews a few topics relevant to Galactic cosmic-ray astrophysics, focusing on the recent AMS-02 data release and Fermi Large Area Telescope data on the diffuse Galactic gamma-ray emissivity. Calculations are made of the…

High Energy Astrophysical Phenomena · Physics 2015-12-16 Charles D. Dermer

Upcoming studies at the Large Hadron Collider (LHC) aim to extend the rapidity coverage in measurements of the production cross section of antinuclei ${\rm \bar d}$ and $\overline{^3\rm He}$. We illustrate the impact of such studies on…

High Energy Astrophysical Phenomena · Physics 2024-02-13 Kfir Blum

An extensive program for the calculation of galactic cosmic-ray propagation has been developed. Primary and secondary nucleons, primary and secondary electrons, secondary positrons and antiprotons are included. Fragmentation and energy…

Astrophysics · Physics 2007-05-23 A. W. Strong , I. V. Moskalenko

The positron fraction in cosmic rays was found to be steadily increasing in function of energy, above $\sim$10 GeV. This behaviour contradicts standard astrophysical mechanisms, in which positrons are secondary particles, produced in the…

High Energy Astrophysical Phenomena · Physics 2015-10-27 Mathieu Boudaud

We have studied charged nuclear fragments produced by 200 - 400 MeV/nucleon carbon ions, interacting with water and polycarbonate, using a newly developed emulsion detector. Total and partial charge-changing cross sections for the…

Galactic magnetic field (GMF) and secondary cosmic rays (CRs) (e.g. $^{10}$beryllium, boron, antiproton) are important components to understand the propagation of CRs in the Milky Way Galaxy. Realistic modeling of GMF is based on the…

High Energy Astrophysical Phenomena · Physics 2018-08-01 Sayan Biswas , Nayantara Gupta