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

被引：170

作者：

Adriani, O. ^{[1
,2
]}

Akaike, Y. ^{[3
,4
]}

Asano, K. ^{[5
]}

Asaoka, Y. ^{[6
,7
]}

Bagliesi, M. G. ^{[8
,9
]}

Berti, E. ^{[1
,2
]}

Bigongiari, G. ^{[8
,9
]}

Binns, W. R. ^{[10
]}

Bonechi, S. ^{[8
,9
]}

Bongi, M. ^{[1
,2
]}

Brogi, P. ^{[8
,9
]}

Buckley, J. H. ^{[10
]}

Cannady, N. ^{[11
]}

Castellini, G. ^{[12
]}

Checchia, C. ^{[13
,14
]}

Cherry, M. L. ^{[11
]}

Collazuol, G. ^{[13
,14
]}

Di Felice, V ^{[15
,16
]}

Ebisawa, K. ^{[17
]}

Fuke, H. ^{[17
]}

Guzik, T. G. ^{[11
]}

Hams, T. ^{[3
,4
,18
]}

Hareyama, M. ^{[19
]}

Hasebe, N. ^{[6
]}

Hibino, K. ^{[20
]}

Ichimura, M. ^{[21
]}

Ioka, K. ^{[22
]}

Ishizaki, W. ^{[5
]}

Israel, M. H. ^{[10
]}

Kasahara, K. ^{[6
]}

Kataoka, J. ^{[6
]}

Kataoka, R. ^{[23
]}

Katayose, Y. ^{[24
]}

Kato, C. ^{[25
]}

Kawanaka, N. ^{[26
,27
]}

Kawakubo, Y. ^{[28
]}

Kohri, K. ^{[29
]}

Krawczynski, H. S. ^{[10
]}

Krizmanic, J. F. ^{[3
,4
,18
]}

Lomtadze, T. ^{[9
]}

Maestro, P. ^{[8
,9
]}

Marrocchesi, P. S. ^{[8
,9
]}

Messineo, A. M. ^{[9
,30
]}

Mitchell, J. W. ^{[4
]}

Miyake, S. ^{[31
]}

Moiseev, A. A. ^{[4
,18
,32
]}

Mori, K. ^{[6
,17
]}

Mori, M. ^{[33
]}

Mori, N. ^{[2
]}

Motz, H. M. ^{[34
]}

机构：

[1] Univ Florence, Dept Phys, Via Sansone 1, I-50019 Sesto, Fiorentino, Italy

[2] Ist Nazl Fis Nucl, Sez Florence, Via Sansone 1, I-50019 Sesto, Fiorentino, Italy

[3] Univ Maryland Baltimore Cty, Dept Phys, 1000 Hilltop Circle, Baltimore, MD 21250 USA

[4] NASA, Astroparticle Phys Lab, GSFC, Greenbelt, MD 20771 USA

[5] Univ Tokyo, Inst Cosm Ray Res, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778582, Japan

[6] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[7] Japan Aerosp Explorat Agcy, JEM Utilizat Ctr, Human Spaceflight Technol Directorate, 2-1-1 Sengen, Tsukuba, Ibaraki 3058505, Japan

[8] Univ Siena, Dept Phys Sci Earth & Environm, Via Roma 56, I-53100 Siena, Italy

[9] Ist Nazl Fis Nucl, Sez Pisa, Polo Fibonacci, Largo B Pontecorvo 3, I-56127 Pisa, Italy

[10] Washington Univ, Dept Phys, One Brookings Dr, St Louis, MO 63130 USA

[11] Louisiana State Univ, Dept Phys & Astron, 202 Nicholson Hall, Baton Rouge, LA 70803 USA

[12] Natl Res Council CNR, Inst Appl Phys IFAC, Via Madonna Piano 10, I-50019 Sesto, Fiorentino, Italy

[13] Univ Padua, Dept Phys & Astron, Via Marzolo 8, I-35131 Padua, Italy

[14] Ist Nazl Fis Nucl, Sez Padova, Via Marzolo 8, I-35131 Padua, Italy

[15] Univ Roma Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy

[16] Ist Nazl Fis Nucl, Sez Rome Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy

[17] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan

[18] CRESST, Greenbelt, MD 20771 USA

[19] St Marianna Univ, Sch Med, Miyamae Ku, 2-16-1 Sugao, Kawasaki, Kanagawa 2168511, Japan

[20] Kanagawa Univ, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 2218686, Japan

[21] Hirosaki Univ, Fac Sci & Technol, Grad Sch Sci & Technol, 3 Bunkyo, Hirosaki, Aomori 0368561, Japan

[22] Kyoto Univ, Yukawa Inst Theoret Phys, Sakyo Ku, Kitashirakawa Oiwakecho, Kyoto 6068502, Japan

[23] Natl Inst Polar Res, 10-3 Midori Cho, Tachikawa, Tokyo 1908518, Japan

[24] Yokohama Natl Univ, Fac Engn, Div Intelligent Syst Engn, 79-5 Tokiwadai, Yokohama, Kanagawa 2408501, Japan

[25] Shinshu Univ, Fac Sci, 3-1-1 Asahi, Matsumoto, Nagano 3908621, Japan

[26] Kyoto Univ, Hakubi Ctr, Sakyo Ku, Kyoto 6068501, Japan

[27] Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan

[28] Aoyama Gakuin Univ, Coll Sci & Engn, Dept Phys & Math, Chuo Ku, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 2525258, Japan

[29] High Energy Accelerator Res Org, Inst Particle & Nucl Studies, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan

[30] Univ Pisa, Polo Fibonacci, Largo B Pontecorvo 3, I-56127 Pisa, Italy

[31] Ibaraki Coll, Natl Inst Technol, Dept Elect & Elect Syst Engn, 866 Nakane, Hitachinaka, Ibaraki 3128508, Japan

[32] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[33] Ritsumeikan Univ, Coll Sci & Engn, Dept Phys Sci, Shiga 5258577, Japan

[34] Waseda Univ, Int Ctr Sci & Engn Programs, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[35] RIKEN, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[36] NASA, Heliospher Phys Lab, GSFC, Greenbelt, MD 20771 USA

[37] Univ Denver, Dept Phys & Astron, Phys Bldg,Room 211,2112 East Wesley Ave, Denver, CO 80208 USA

[38] ASDC, Via Politecn Snc, I-00133 Rome, Italy

[39] Nihon Univ, Coll Ind Technol, 1-2-1 Izumi, Narashino, Chiba 2758575, Japan

[40] Univ Tokyo, Kavli Inst Phys & Math Universe, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan

[41] Waseda Univ, Sch Adv Sci & Engn, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[42] Osaka City Univ, Grad Sch Sci, Div Math & Phys, Sumiyoshi Ku, 3-3-138 Sugimoto, Osaka 5588585, Japan

[43] Natl Inst Quantum & Radiat Sci & Technol, Inage Ku, 4-9-1 Anagawa, Chiba 2638555, Japan

[44] Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[45] Ibaraki Univ, Coll Sci, 2-1-1 Bunkyo, Mito, Ibaraki 3108512, Japan

[46] Shibaura Inst Technol, Dept Elect Informat Syst, 307 Fukasaku, Saitama 3378570, Japan

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.120.261102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 allcalorimetric 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 similar to 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 similar to 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.

引用

页数：7

共 50 条

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