RICAP-22 Roma International Conference on AstroParticle Physics

Session

Cosmic Rays - 1

Sep 7, 2022, 2:00 PM

Aula Amaldi (Physics Department, University "La Sapienza", Roma, Italy)

Conveners

Cosmic Rays - 1

• Philipp Mertsch (TTK, RWTH Aachen University)
• Paolo Desiati (University of Wisconsin - Madison)

94. Study of cosmic-ray solar modulation with the PAMELA experiment

Alex Lenni (Istituto Nazionale di Fisica Nucleare)

9/7/22, 2:00 PM

The data collected by the satellite-borne PAMELA experiment, launched in June 2006, opened a new era of high-precision studies of cosmic rays. The PAMELA low detection energy threashold and long operativity enabled accurate measurements of the fluxes of several cosmic-ray species over a large energy range and the study of their time variation below a few tens of GeVs. In particular, these...

36. Modeling solar modulation of cosmic rays in light of new data from AMS-02 and PAMELA

Nicola Tomassetti (University of Perugia & INFN, Italy)

9/7/22, 2:20 PM

When traveling inside the heliosphere, cosmic rays are influenced by magnetic turbulence and solar wind disturbances, which result in the so-called solar modulation effect. Understanding solar modulation is essential for studying the origin and the propagation processes of Galactic cosmic rays, as well as for establishing of predictive models of energetic radiation in space. In this talk, we...

35. Precision Measurement of the Monthly Proton, Helium, Carbon and Oxygen Fluxes in Cosmic Rays with the Alpha Magnetic Spectrometer on the International Space Station

Dr Alejandro Reina Conde (INFN Bologna), Dr Federico Donnini (Istituto Nazionale di Fisica Nucleare)

9/7/22, 2:40 PM

Cosmic Rays (CR) inside the Heliosphere interact with the solar wind and with the interplanetary magnetic field, resulting in a temporal variation of the cosmic ray intensity near Earth for rigidities up to few tens of GV. This variation is known as Solar Modulation. Previous AMS results on proton and helium spectra showed how the two fluxes behave differently in time. To better understand...

18. Electron and positron fluxes in primary cosmic rays measured with the AMS-02 detector on the ISS

Matteo Duranti (Istituto Nazionale di Fisica Nucleare)

9/7/22, 3:00 PM

The Alpha Magnetic Spectrometer, AMS-02, is a magnetic spectrometer detector operating on the International Space Station (ISS) since May the 19th, 2011. The latest precision results on cosmic-ray electrons up to 1.4 TeV and positrons up to 1 TeV are providing new insights into the origin of high energy cosmic-ray electrons and positrons. In the entire energy range the electron and positron...

81. The High-Energy Particle Detector (HEPD-01): observations and results after 4 years in orbit

Matteo Martucci (Istituto Nazionale di Fisica Nucleare)

9/7/22, 3:20 PM

The High-Energy Particle Detector (HEPD-01) onboard the China Seismo-Electromagnetic Satellite (CSES-01) - launched in February 2018 - is a light and compact payload suitable for measuring electrons (3-100 MeV), protons (30-300 MeV), and light nuclei (up to a few hundreds of MeV) with a high energy resolution and a wide angular acceptance. The very good capabilities in particle detection and...

59. Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ≤ 28 with the GALPROP–HELMOD Framework: Prediction Capability and Hints of Excesses

Nicolò Masi (Istituto Nazionale di Fisica Nucleare)

9/7/22, 3:40 PM

Since its launch, the Alpha Magnetic Spectrometer-02 (AMS-02) has delivered outstanding quality measurements of the spectra of cosmic-ray (CR) species (p¯, e±) and nuclei (H–Si, Fe), which resulted in a number of breakthroughs. Spectra of heavier low-abundance nuclei are not expected until later in the mission. Consequently, we exploited a “fraction” of HEAO-3-C2 data that match available...

65. Self-confinement of low-energy cosmic rays around supernova remnants

Hanno Jacobs

9/7/22, 4:00 PM

Supernova Remnants have long been considered as promising candidate sources for cosmic rays. However, modelling the transport around these sources is difficult due to its nonlinear nature. The strong overdensity in the near source region leads to the production of plasma turbulence, upon which the particles scatter. To calculate this mechanism, called self-confinement, requires the numerical...