Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station

O Adriani^{1

2}, Y Akaike^{3

4}, K Asano⁵, Y Asaoka^{6

7}, M G Bagliesi^{8

9}, E Berti^{1

2}, G Bigongiari^{8

9}, W R Binns¹⁰, S Bonechi^{8

9}, M Bongi^{1

2}, P Brogi^{8

9}, J H Buckley¹⁰, N Cannady¹¹, G Castellini¹², C Checchia^{13

14}, M L Cherry¹¹, G Collazuol^{13

14}, V Di Felice^{15

16}, K Ebisawa¹⁷, H Fuke¹⁷, T G Guzik¹¹, T Hams^{3

18}, M Hareyama¹⁹, N Hasebe⁶, K Hibino²⁰, M Ichimura²¹, K Ioka²², W Ishizaki⁵, M H Israel¹⁰, K Kasahara⁶, J Kataoka⁶, R Kataoka²³, Y Katayose²⁴, C Kato²⁵, N Kawanaka^{26

27}, Y Kawakubo²⁸, K Kohri²⁹, H S Krawczynski¹⁰, J F Krizmanic^{3

18}, T Lomtadze⁹, P Maestro^{8

9}, P S Marrocchesi^{8

9}, A M Messineo^{9

30}, J W Mitchell⁴, S Miyake³¹, A A Moiseev^{18

32}, K Mori^{6

17}, M Mori³³, N Mori², H M Motz³⁴, K Munakata²⁵, H Murakami⁶, S Nakahira³⁵, J Nishimura¹⁷, G A de Nolfo³⁶, S Okuno²⁰, J F Ormes³⁷, S Ozawa⁶, L Pacini^{1

2

12}, F Palma^{15

16}, P Papini², A V Penacchioni^{8

38}, B F Rauch¹⁰, S B Ricciarini^{2

12}, K Sakai^{3

18}, T Sakamoto²⁸, M Sasaki^{18

32}, Y Shimizu²⁰, A Shiomi³⁹, R Sparvoli^{15

16}, P Spillantini¹, F Stolzi^{8

9}, J E Suh^{8

9}, A Sulaj^{8

9}, I Takahashi⁴⁰, M Takayanagi¹⁷, M Takita⁵, T Tamura²⁰, N Tateyama²⁰, T Terasawa³⁵, H Tomida¹⁷, S Torii^{6

7

41}, Y Tsunesada⁴², Y Uchihori⁴³, S Ueno¹⁷, E Vannuccini², J P Wefel¹¹, K Yamaoka⁴⁴, S Yanagita⁴⁵, A Yoshida²⁸, K Yoshida⁴⁶; CALET Collaboration

Affiliations

¹ Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.
² INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.
³ Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.
⁴ Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.
⁵ Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.
⁶ Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
⁷ JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan.
⁸ Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.
⁹ INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.
¹⁰ Department of Physics, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.
¹¹ Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.
¹² Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.
¹³ Department of Physics and Astronomy, University of Padova, Via Marzolo, 8, 35131 Padova, Italy.
¹⁴ INFN Sezione di Padova, Via Marzolo, 8, 35131 Padova, Italy.
¹⁵ University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.
¹⁶ INFN Sezione di Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.
¹⁷ Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.
¹⁸ CRESST and Astroparticle Physics Laboratory NASA/GSFC, Greenbelt, Maryland 20771, USA.
¹⁹ St. Marianna University School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, Kanagawa 216-8511, Japan.
²⁰ Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.
²¹ Faculty of Science and Technology, Graduate School of Science and Technology, Hirosaki University, 3, Bunkyo, Hirosaki, Aomori 036-8561, Japan.
²² Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa Oiwakecho, Sakyo, Kyoto 606-8502, Japan.
²³ National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan.
²⁴ Faculty of Engineering, Division of Intelligent Systems Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
²⁵ Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.
²⁶ Hakubi Center, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
²⁷ Department of Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan.
²⁸ College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.
²⁹ Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
³⁰ University of Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.
³¹ Department of Electrical and Electronic Systems Engineering, National Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508 Japan.
³² Department of Astronomy, University of Maryland, College Park, Maryland 20742, USA.
³³ Department of Physical Sciences, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan.
³⁴ International Center for Science and Engineering Programs, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
³⁵ RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
³⁶ Heliospheric Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.
³⁷ Department of Physics and Astronomy, University of Denver, Physics Building, Room 211, 2112 East Wesley Avenue, Denver, Colorado 80208-6900, USA.
³⁸ ASI Science Data Center (ASDC), Via del Politecnico snc, 00133 Rome, Italy.
³⁹ College of Industrial Technology, Nihon University, 1-2-1 Izumi, Narashino, Chiba 275-8575, Japan.
⁴⁰ Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8583, Japan.
⁴¹ School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
⁴² Division of Mathematics and Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
⁴³ National Institutes for Quantum and Radiation Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
⁴⁴ Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan.
⁴⁵ College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
⁴⁶ Department of Electronic Information Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama 337-8570, Japan.

PMID: 30004739
DOI: 10.1103/PhysRevLett.120.261102

Free article

Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station

O Adriani et al. Phys Rev Lett. 2018.

Free article

. 2018 Jun 29;120(26):261102.

doi: 10.1103/PhysRevLett.120.261102.

Authors

Affiliations

¹ Department of Physics, University of Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.
² INFN Sezione di Florence, Via Sansone, 1-50019 Sesto, Fiorentino, Italy.
³ Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.
⁴ Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.
⁵ Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.
⁶ Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
⁷ JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan.
⁸ Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.
⁹ INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.
¹⁰ Department of Physics, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.
¹¹ Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.
¹² Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.
¹³ Department of Physics and Astronomy, University of Padova, Via Marzolo, 8, 35131 Padova, Italy.
¹⁴ INFN Sezione di Padova, Via Marzolo, 8, 35131 Padova, Italy.
¹⁵ University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.
¹⁶ INFN Sezione di Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy.
¹⁷ Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.
¹⁸ CRESST and Astroparticle Physics Laboratory NASA/GSFC, Greenbelt, Maryland 20771, USA.
¹⁹ St. Marianna University School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, Kanagawa 216-8511, Japan.
²⁰ Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.
²¹ Faculty of Science and Technology, Graduate School of Science and Technology, Hirosaki University, 3, Bunkyo, Hirosaki, Aomori 036-8561, Japan.
²² Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa Oiwakecho, Sakyo, Kyoto 606-8502, Japan.
²³ National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan.
²⁴ Faculty of Engineering, Division of Intelligent Systems Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
²⁵ Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.
²⁶ Hakubi Center, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
²⁷ Department of Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan.
²⁸ College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.
²⁹ Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
³⁰ University of Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3-56127 Pisa, Italy.
³¹ Department of Electrical and Electronic Systems Engineering, National Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508 Japan.
³² Department of Astronomy, University of Maryland, College Park, Maryland 20742, USA.
³³ Department of Physical Sciences, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan.
³⁴ International Center for Science and Engineering Programs, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
³⁵ RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
³⁶ Heliospheric Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.
³⁷ Department of Physics and Astronomy, University of Denver, Physics Building, Room 211, 2112 East Wesley Avenue, Denver, Colorado 80208-6900, USA.
³⁸ ASI Science Data Center (ASDC), Via del Politecnico snc, 00133 Rome, Italy.
³⁹ College of Industrial Technology, Nihon University, 1-2-1 Izumi, Narashino, Chiba 275-8575, Japan.
⁴⁰ Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8583, Japan.
⁴¹ School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
⁴² Division of Mathematics and Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
⁴³ National Institutes for Quantum and Radiation Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
⁴⁴ Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan.
⁴⁵ College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
⁴⁶ Department of Electronic Information Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama 337-8570, Japan.

PMID: 30004739
DOI: 10.1103/PhysRevLett.120.261102

Abstract

Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron Telescope (CALET) on the International Space Station utilizing the data up to November 2017. The analysis uses the full detector acceptance at high energies, approximately doubling the statistics compared to the previous result. CALET is an all-calorimetric instrument with a total thickness of 30 X_{0} at normal incidence and fine imaging capability, designed to achieve large proton rejection and excellent energy resolution well into the TeV energy region. The observed energy spectrum in the region below 1 TeV shows good agreement with Alpha Magnetic Spectrometer (AMS-02) data. In the energy region below ∼300 GeV, CALET's spectral index is found to be consistent with the AMS-02, Fermi Large Area Telescope (Fermi-LAT), and Dark Matter Particle Explorer (DAMPE), while from 300 to 600 GeV the spectrum is significantly softer than the spectra from the latter two experiments. The absolute flux of CALET is consistent with other experiments at around a few tens of GeV. However, it is lower than those of DAMPE and Fermi-LAT with the difference increasing up to several hundred GeV. The observed energy spectrum above ∼1 TeV suggests a flux suppression consistent within the errors with the results of DAMPE, while CALET does not observe any significant evidence for a narrow spectral feature in the energy region around 1.4 TeV. Our measured all-electron flux, including statistical errors and a detailed breakdown of the systematic errors, is tabulated in the Supplemental Material in order to allow more refined spectral analyses based on our data.

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Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station

Affiliations

Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station

Authors

Affiliations

Abstract

LinkOut - more resources

Full Text Sources

Other Literature Sources

Research Materials