Galactic Cosmic-Ray Hydrogen Spectra in the 40-250 MeV Range Measured by the High-energy Particle Detector (HEPD) on board the CSES-01 Satellite between 2018 and 2020
Journal
Date Issued
2020
Author(s)
Bartocci, S.
•
Battiston, R.
•
Burger, W. J.
•
Campana, D.
•
Carfora, L.
•
Castellini, G.
•
Conti, L.
•
Contin, A.
•
De Donato, C.
•
De Persio, F.
•
De Santis, C.
•
•
Follega, F. M.
•
Iuppa, R.
•
Lazzizzera, I.
•
Marcelli, N.
•
Martucci, M.
•
Masciantonio, G.
•
Merge, M.
•
Osteria, G.
•
Palma, F.
•
Palmonari, F.
•
•
Perfetto, F.
•
Picozza, P.
•
Piersanti, M.
•
Pozzato, M.
•
Rashevskaya, I.
•
Ricci, E.
•
Ricci, M.
•
Ricciarini, S.
•
Scotti, V.
•
Sotgiu, A.
•
Sparvoli, R.
•
Ubertini, P.
•
Vitale, V.
•
Zoffoli, S.
•
Zuccon, P.
Abstract
The High-energy Particle Detector (HEPD) on board the China Seismo-Electromagnetic Satellite (CSES-01)—launched on 2018 February 2—is a light and compact payload suitable for measuring electrons (3–100 MeV), protons (30–250 MeV), and light nuclei (up to a few hundreds of MeV). The Sun-synchronous orbit and large acceptance allow HEPD to measure cosmic-ray particles near the ±65° latitude limit for a fair amount of time per day. In this work, three semiannual galactic hydrogen energy spectra between ∼40 and 250 MeV are presented, including a comparison with theoretical spectra from HelMod, a 2D Monte Carlo model developed to simulate the solar modulation of cosmic rays throughout the heliosphere. To our knowledge, these are the first hydrogen energy spectra below 250 MeV measured at 1 au between 2018 and 2020.
Issn Identifier
0004-637X
Rights
open.access
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