Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10 GeV/n to 2.2 TeV/n with the Calorimetric Electron Telescope on the International Space Station.

Journal

Physical review letters

ISSN: 1079-7114

Titre abrégé: Phys Rev Lett

Pays: United States

ID NLM: 0401141

Informations de publication

Date de publication:
18 Dec 2020

Historique:

received: 28 07 2020

revised: 01 09 2020

accepted: 19 11 2020

entrez: 8 1 2021

pubmed: 9 1 2021

medline: 9 1 2021

Statut: ppublish

Résumé

In this paper, we present the measurement of the energy spectra of carbon and oxygen in cosmic rays based on observations with the Calorimetric Electron Telescope on the International Space Station from October 2015 to October 2019. Analysis, including the detailed assessment of systematic uncertainties, and results are reported. The energy spectra are measured in kinetic energy per nucleon from 10 GeV/n to 2.2 TeV/n with an all-calorimetric instrument with a total thickness corresponding to 1.3 nuclear interaction length. The observed carbon and oxygen fluxes show a spectral index change of ∼0.15 around 200 GeV/n established with a significance >3σ. They have the same energy dependence with a constant C/O flux ratio 0.911±0.006 above 25 GeV/n. The spectral hardening is consistent with that measured by AMS-02, but the absolute normalization of the flux is about 27% lower, though in agreement with observations from previous experiments including the PAMELA spectrometer and the calorimetric balloon-borne experiment CREAM.

Identifiants

DOI: 10.1103/PhysRevLett.125.251102 PMID: 33416351

pubmed: 33416351

doi: 10.1103/PhysRevLett.125.251102

doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

251102

Auteurs

O Adriani (O)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

Y Akaike (Y)

Waseda Research Institute for Science and Engineering, Waseda University, 17 Kikuicho, Shinjuku, Tokyo 162-0044, Japan.

JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan.

K Asano (K)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

Y Asaoka (Y)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

M G Bagliesi (MG)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

E Berti (E)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

G Bigongiari (G)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

W R Binns (WR)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

M Bongi (M)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

P Brogi (P)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

A Bruno (A)

Heliospheric Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

J H Buckley (JH)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

N Cannady (N)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

G Castellini (G)

Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.

C Checchia (C)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

M L Cherry (ML)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

G Collazuol (G)

Department of Physics and Astronomy, University of Padova, Via Marzolo, 8, 35131 Padova, Italy.

INFN Sezione di Padova, Via Marzolo, 8, 35131 Padova, Italy.

K Ebisawa (K)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

H Fuke (H)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

S Gonzi (S)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

T G Guzik (TG)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

T Hams (T)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

K Hibino (K)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

M Ichimura (M)

Faculty of Science and Technology, Graduate School of Science and Technology, Hirosaki University, 3, Bunkyo, Hirosaki, Aomori 036-8561, Japan.

K Ioka (K)

Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa Oiwakecho, Sakyo, Kyoto 606-8502, Japan.

W Ishizaki (W)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

M H Israel (MH)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

K Kasahara (K)

Department of Electronic Information Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama 337-8570, Japan.

J Kataoka (J)

Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.

R Kataoka (R)

National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan.

Y Katayose (Y)

Faculty of Engineering, Division of Intelligent Systems Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.

C Kato (C)

Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.

N Kawanaka (N)

Hakubi Center, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.

Department of Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan.

Y Kawakubo (Y)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

K Kobayashi (K)

Waseda Research Institute for Science and Engineering, Waseda University, 17 Kikuicho, Shinjuku, Tokyo 162-0044, Japan.

JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan.

K Kohri (K)

Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.

H S Krawczynski (HS)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

J F Krizmanic (JF)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

J Link (J)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

P Maestro (P)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

P S Marrocchesi (PS)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

A M Messineo (AM)

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

University of Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

J W Mitchell (JW)

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

S Miyake (S)

Department of Electrical and Electronic Systems Engineering, National Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508 Japan.

A A Moiseev (AA)

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Department of Astronomy, University of Maryland, College Park, Maryland 20742, USA.

M Mori (M)

Department of Physical Sciences, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan.

N Mori (N)

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

H M Motz (HM)

Faculty of Science and Engineering, Global Center for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.

K Munakata (K)

Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.

S Nakahira (S)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

J Nishimura (J)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

G A de Nolfo (GA)

Heliospheric Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

S Okuno (S)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

J F Ormes (JF)

Department of Physics and Astronomy, University of Denver, Physics Building, Room 211, 2112 East Wesley Ave., Denver, Colorado 80208-6900, USA.

N Ospina (N)

Department of Physics and Astronomy, University of Padova, Via Marzolo, 8, 35131 Padova, Italy.

INFN Sezione di Padova, Via Marzolo, 8, 35131 Padova, Italy.

S Ozawa (S)

Quantum ICT Advanced Development Center, National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan.

L Pacini (L)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.

F Palma (F)

INFN Sezione di Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.

P Papini (P)

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

B F Rauch (BF)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

S B Ricciarini (SB)

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.

K Sakai (K)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

T Sakamoto (T)

College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.

M Sasaki (M)

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Department of Astronomy, University of Maryland, College Park, Maryland 20742, USA.

Y Shimizu (Y)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

A Shiomi (A)

College of Industrial Technology, Nihon University, 1-2-1 Izumi, Narashino, Chiba 275-8575, Japan.

R Sparvoli (R)

INFN Sezione di Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.

University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.

P Spillantini (P)

Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

F Stolzi (F)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

S Sugita (S)

College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.

J E Suh (JE)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

A Sulaj (A)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.

M Takita (M)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

T Tamura (T)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

T Terasawa (T)

RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

S Torii (S)

Waseda Research Institute for Science and Engineering, Waseda University, 17 Kikuicho, Shinjuku, Tokyo 162-0044, Japan.

Y Tsunesada (Y)

Division of Mathematics and Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.

Y Uchihori (Y)

National Institutes for Quantum and Radiation Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.

E Vannuccini (E)

INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.

J P Wefel (JP)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

K Yamaoka (K)

Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan.

S Yanagita (S)

College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.

A Yoshida (A)

College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.

K Yoshida (K)

Department of Electronic Information Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama 337-8570, Japan.

Classifications MeSH