Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond...
| _version_ | 1826189107295944704 |
|---|---|
| author | Becker, Ulrich J. Behlmann, Matthew Daniel Burger, Joseph D. Cai, Xudong Capell, Michael H. Chen, Andrew I. Choumilov, Evgueni Choutko, Vitali Eline, Alexandre Eppling, Frederic J. Fisher, Peter H. Galaktionov, Y. Goglov, Pavel Heil, Melanie Hsieh, Tsai-hsiu Kounina, Olga Kounine, Andrei Koutsenko, Vladimir Krafczyk, Matthew Scott Lebedev, Alexei Li, Q. Plyaskin, Vasily Rozhkov, Andrey B. Shi, X. Y. Sun, Wei Sun, W. H. Ting, Samuel C. C. Ting, Susan Marks Vaurynovich, Siarhei S. Wang, Xiaozhen Weng, Zhili Xie, M. Xu, Weiwei Zuccon, Paolo Chen, Hai, Ph. D. Massachusetts Institute of Technology |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Becker, Ulrich J. Behlmann, Matthew Daniel Burger, Joseph D. Cai, Xudong Capell, Michael H. Chen, Andrew I. Choumilov, Evgueni Choutko, Vitali Eline, Alexandre Eppling, Frederic J. Fisher, Peter H. Galaktionov, Y. Goglov, Pavel Heil, Melanie Hsieh, Tsai-hsiu Kounina, Olga Kounine, Andrei Koutsenko, Vladimir Krafczyk, Matthew Scott Lebedev, Alexei Li, Q. Plyaskin, Vasily Rozhkov, Andrey B. Shi, X. Y. Sun, Wei Sun, W. H. Ting, Samuel C. C. Ting, Susan Marks Vaurynovich, Siarhei S. Wang, Xiaozhen Weng, Zhili Xie, M. Xu, Weiwei Zuccon, Paolo Chen, Hai, Ph. D. Massachusetts Institute of Technology |
| author_sort | Becker, Ulrich J. |
| collection | MIT |
| description | Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30 GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons. |
| first_indexed | 2024-09-23T08:09:57Z |
| format | Article |
| id | mit-1721.1/90426 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:09:57Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/904262023-02-26T04:22:09Z Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station Becker, Ulrich J. Behlmann, Matthew Daniel Burger, Joseph D. Cai, Xudong Capell, Michael H. Chen, Andrew I. Choumilov, Evgueni Choutko, Vitali Eline, Alexandre Eppling, Frederic J. Fisher, Peter H. Galaktionov, Y. Goglov, Pavel Heil, Melanie Hsieh, Tsai-hsiu Kounina, Olga Kounine, Andrei Koutsenko, Vladimir Krafczyk, Matthew Scott Lebedev, Alexei Li, Q. Plyaskin, Vasily Rozhkov, Andrey B. Shi, X. Y. Sun, Wei Sun, W. H. Ting, Samuel C. C. Ting, Susan Marks Vaurynovich, Siarhei S. Wang, Xiaozhen Weng, Zhili Xie, M. Xu, Weiwei Zuccon, Paolo Chen, Hai, Ph. D. Massachusetts Institute of Technology Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Becker, Ulrich J. Behlmann, Matthew Daniel Burger, Joseph D. Cai, Xudong Capell, Michael H. Chen, Andrew I. Chen, Hai Choumilov, Evgueni Choutko, Vitali Eline, Alexandre Eppling, Frederic J. Fisher, Peter H. Galaktionov, Y. Goglov, Pavel Heil, Melanie Hsieh, Tsai-hsiu Kounina, Olga Kounine, Andrei Koutsenko, Vladimir Krafczyk, Matthew Scott Lebedev, Alexei Li, Q. Plyaskin, Vasily Rozhkov, Andrey B. Shi, X. Y. Sun, Wei Sun, W. H. Ting, Samuel C. C. Ting, Susan Marks Vaurynovich, Siarhei S. Wang, Xiaozhen Weng, Zhili Xie, M. Xu, Weiwei Zuccon, Paolo Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30 GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons. 2014-09-29T14:17:53Z 2014-09-29T14:17:53Z 2014-09 2014-08 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/90426 Aguilar, M., D. Aisa, A. Alvino, G. Ambrosi, K. Andeen, L. Arruda, N. Attig, et al. “Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station.” Physical Review Letters 113, no. 12 (September 2014). © 2014 American Physical Society https://orcid.org/0000-0002-7157-4613 https://orcid.org/0000-0001-7374-9774 https://orcid.org/0000-0001-7831-7460 https://orcid.org/0000-0002-2919-9549 https://orcid.org/0000-0002-0450-7007 https://orcid.org/0000-0002-6316-0808 https://orcid.org/0000-0001-8187-7266 https://orcid.org/0000-0003-3513-8408 https://orcid.org/0000-0002-1923-6289 https://orcid.org/0000-0002-8402-3116 https://orcid.org/0000-0002-7172-9021 https://orcid.org/0000-0001-6876-8495 https://orcid.org/0000-0002-2728-0167 https://orcid.org/0000-0002-4436-6077 https://orcid.org/0000-0001-8018-9701 https://orcid.org/0000-0002-8373-3212 https://orcid.org/0000-0002-5006-6847 https://orcid.org/0000-0002-9105-5386 https://orcid.org/0000-0002-4918-5128 https://orcid.org/0000-0002-7216-9206 https://orcid.org/0000-0003-2187-5968 https://orcid.org/0000-0002-8667-5660 https://orcid.org/0000-0002-0236-7274 en_US http://dx.doi.org/10.1103/PhysRevLett.113.121102 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Becker, Ulrich J. Behlmann, Matthew Daniel Burger, Joseph D. Cai, Xudong Capell, Michael H. Chen, Andrew I. Choumilov, Evgueni Choutko, Vitali Eline, Alexandre Eppling, Frederic J. Fisher, Peter H. Galaktionov, Y. Goglov, Pavel Heil, Melanie Hsieh, Tsai-hsiu Kounina, Olga Kounine, Andrei Koutsenko, Vladimir Krafczyk, Matthew Scott Lebedev, Alexei Li, Q. Plyaskin, Vasily Rozhkov, Andrey B. Shi, X. Y. Sun, Wei Sun, W. H. Ting, Samuel C. C. Ting, Susan Marks Vaurynovich, Siarhei S. Wang, Xiaozhen Weng, Zhili Xie, M. Xu, Weiwei Zuccon, Paolo Chen, Hai, Ph. D. Massachusetts Institute of Technology Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station |
| title | Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station |
| title_full | Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station |
| title_fullStr | Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station |
| title_full_unstemmed | Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station |
| title_short | Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station |
| title_sort | electron and positron fluxes in primary cosmic rays measured with the alpha magnetic spectrometer on the international space station |
| url | http://hdl.handle.net/1721.1/90426 https://orcid.org/0000-0002-7157-4613 https://orcid.org/0000-0001-7374-9774 https://orcid.org/0000-0001-7831-7460 https://orcid.org/0000-0002-2919-9549 https://orcid.org/0000-0002-0450-7007 https://orcid.org/0000-0002-6316-0808 https://orcid.org/0000-0001-8187-7266 https://orcid.org/0000-0003-3513-8408 https://orcid.org/0000-0002-1923-6289 https://orcid.org/0000-0002-8402-3116 https://orcid.org/0000-0002-7172-9021 https://orcid.org/0000-0001-6876-8495 https://orcid.org/0000-0002-2728-0167 https://orcid.org/0000-0002-4436-6077 https://orcid.org/0000-0001-8018-9701 https://orcid.org/0000-0002-8373-3212 https://orcid.org/0000-0002-5006-6847 https://orcid.org/0000-0002-9105-5386 https://orcid.org/0000-0002-4918-5128 https://orcid.org/0000-0002-7216-9206 https://orcid.org/0000-0003-2187-5968 https://orcid.org/0000-0002-8667-5660 https://orcid.org/0000-0002-0236-7274 |
| work_keys_str_mv | AT beckerulrichj electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT behlmannmatthewdaniel electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT burgerjosephd electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT caixudong electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT capellmichaelh electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT chenandrewi electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT choumilovevgueni electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT choutkovitali electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT elinealexandre electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT epplingfredericj electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT fisherpeterh electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT galaktionovy electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT goglovpavel electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT heilmelanie electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT hsiehtsaihsiu electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT kouninaolga electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT kounineandrei electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT koutsenkovladimir electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT krafczykmatthewscott electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT lebedevalexei electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT liq electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT plyaskinvasily electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT rozhkovandreyb electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT shixy electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT sunwei electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT sunwh electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT tingsamuelcc electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT tingsusanmarks electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT vaurynovichsiarheis electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT wangxiaozhen electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT wengzhili electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT xiem electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT xuweiwei electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT zucconpaolo electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation AT chenhaiphdmassachusettsinstituteoftechnology electronandpositronfluxesinprimarycosmicraysmeasuredwiththealphamagneticspectrometerontheinternationalspacestation |