Electron and positron fluxes in primary cosmic rays measured with the alpha magnetic spectrometer on the international space station.

@article{Aguilar2014ElectronAP,
  title={Electron and positron fluxes in primary cosmic rays measured with the alpha magnetic spectrometer on the international space station.},
  author={Miguel Aguilar and Damiano Aisa and Antonio Alvino and Giovanni Ambrosi and Karen Andeen and L. Arruda and Norbert Attig and Philipp Azzarello and Andreas Bachlechner and Fernando Bar{\~a}o and Aur{\'e}lien Barrau and Laurence Barrin and Alessandro Bartoloni and Laurent Basara and Markus Battarbee and Roberto Battiston and J. L. Bazo and Uwe Becker and Matthew Behlmann and Bastian Beischer and Javier Berdugo and Bruna Bertucci and Gabriele Bigongiari and Veronica Bindi and Sauro Bizzaglia and M. Bizzarri and Giuliano Boella and Wim de Boer and Ken Bollweg and Vincent Bonnivard and Bruno Borgia and Serena Borsini and M. J. Boschini and Maurice Bourquin and Joseph Burger and Franck Cadoux and X. D. Cai and Mireia Br{\`o}via Capell and Sami Caroff and Jorge Casaus and Vincenzo Cascioli and Giovanni Castellini and Ignacio Cernuda and Franco Cervelli and Min Jeong Chae and Y. H. Chang and A. I. Chen and H. S. Chen and G. M. Cheng and H. S. Chen and L. Cheng and Alexei Chikanian and H. Y. Chou and E. Choumilov and Vitali Choutko and Chan Hoon Chung and Chris Clark and Rosa Clavero and Nicolas Produit and Cristina Consolandi and Andrea Contin and Claudio Corti and B. Coste and Z.-F. Cui and M. Dai and Carlos Delgado and Stefano Della Torre and Melahat Bilge Demirk{\"o}z and L. Derome and S. Di Falco and L. Di Masso and Francesco Dimiccoli and C. D{\'i}az and Philip von Doetinchem and Wenyan Du and Matteo Duranti and Domenico D'urso and Alexandre Eline and Frederic J. Eppling and Timo Eronen and Y. Y. Fan and L. Farnesini and J. H. Feng and E. Fiandrini and A. Fiasson and Evan Finch and P. H. Fisher and Yu. K. Galaktionov and Giovanni Gallucci and Bruce Rafael Mellado Garcia and R. Garcia-Lopez and Henning Gast and Iris Gebauer and M. Gervasi and A. Ghelfi and William Gillard and Francesca Giovacchini and P. Goglov and J. Gong and Corinne Goy and Varlen Grabski and D. Grandi and Maura Graziani and Cristina Guandalini and Irene Guerri and K.-H. Guo and M. Habiby and Sadakazu Haino and K. C. Han and Z. H. He and Matthias Heil and Julia Hoffman and Timothy H. Hsieh and Z. C. Huang and Changgi Huh and M. Incagli and Maria Ionica and Wooyoung Jang and H. Jinchi and K. A. Kanishev and G. N. Kim and K. S. Kim and Thomas Kirn and R. Kossakowski and O. Kounina and Andrei Kounine and Vladimir Koutsenko and Matthew Scott Krafczyk and Simon Kunz and G. La Vacca and Elisa Laudi and Giuliano Laurenti and Ignazio Lazzizzera and Alexei Lebedev and H. T. Lee and S. C. Lee and Catherine Leluc and H. L. Li and J. Q. Li and Q. J. Li and Q. J. Li and T. X. Li and W. Li and Y. Z. Li and Z. H. Li and Z. Y. Li and S. I. Lim and C. H. Lin and Paolo Lipari and Th. Lippert and D. Liu and H. T. Liu and T. Lomtadze and M Lu and Y. S. Lu and K. Luebelsmeyer and Feng Luo and J. Z. Luo and Shan-shan Lv and R. Majka and Alexander Malinin and Carlos Ma{\~n}{\'a} and J-C. Marin and T. A. Martin and German Martinez and N. Masi and David Maurin and Arturo Alejandro Menchaca-rocha and Qinghua Meng and D. C. Mo and L. Morescalchi and P. Mott and M. M{\"u}ller and J. Q. Ni and N. N. Nikonov and Francesco Nozzoli and Pedro Nunes and Andreas Alexander Obermeier and Alberto Oliva and Miguel Orcinha and Federico Palmonari and Carmen Palomares and Mercedes Paniccia and A. Papi and E. Pedreschi and Simonetta Pensotti and Rui Pereira and Federico Pilo and Antonfranco Piluso and Cecilia Pizzolotto and V. I. Plyaskin and Martin Pohl and V. Poireau and E. Postaci and Antje Putze and Lucio Quadrani and X. M. Qi and P. G. Rancoita and Divic Rapin and J. S. Ricol and I. Rodr{\'i}guez and S. Rosier-Lees and A. Rozhkov and Davide Rozza and Roal'd. Z. Sagdeev and Jack H. Sandweiss and Pierre Saouter and Carla Sbarra and Stefan Schael and Stephen M. Schmidt and D. Schuckardt and A. Schulz von Dratzig and Gregor Schwering and G. Scolieri and E-S. Seo and B. S. Shan and Y. H. Shan and J. Y. Shi and X. Y. Shi and Y. M. Shi and Thorsten Siedenburg and D. C. Son and Francesca R. Spada and Franco Spinella and W. H. Sun and W. H. Sun and M. Tacconi and C. P. Tang and X. W. Tang and Z. C. Tang and Lian Tao and Diego Tescaro and Samuel C. C. Ting and S. M. Ting and Nicola Tomassetti and Jarmo Torsti and C. T{\"u}rkoğlu and Timo Urban and Valerio Vagelli and Enzo Valente and Cristina Vannini and Eino Valtonen and Siarhei Vaurynovich and M. Vecchi and Miguel Angel Velasco and J. P. Vialle and L. Q. Wang and Q. L. Wang and R. S. Wang and X. X. Wang and Z. X. Wang and Zhili Weng and Kathryn Whitman and Jens Wienkenh{\"o}ver and H. Wu and X. M. Xia and Minjia Xie and Si Xie and Runqun Xiong and Gong-Ming Xin and Ning-sheng Xu and W. Xu and Qiurong Yan and J. Yang and M. S. Yang and Q. H. Ye and Han Yi and Y. J. Yu and Z. Q. Yu and Stefan Zeissler and J. H. Zhang and M. T. Zhang and X. B. Zhang and Z. Zhang and Z. M. Zheng and H L Zhuang and Valery Zhukov and Antonino Zichichi and N. Zimmermann and Paolo Zuccon and Christine Zurbach},
  journal={Physical review letters},
  year={2014},
  volume={113 12},
  pages={
          121102
        }
}
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… 

Figures and Tables from this paper

Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station

Precision measurements by AMS of the fluxes of cosmic ray positrons, electrons, antiprotons, protons as well as their rations reveal several unexpected and intriguing features. The presented

Recent results of the AMS-02 experiment on the ISS

The Alpha Magnetic Spectrometer has recently released a first set of precise measurements of cosmic rays detected on the International Space Station in the GeV to TeV energy range. The fluxes of

High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays with the Alpha Magnetic Spectrometer on the International Space Station

A precision measurement by AMS-02 of the positron fraction in primary cosmic rays is presented on this proceeding. Over the last two decades, there has been a strong interest in the cosmic ray

Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes by the Alpha Magnetic Spectrometer on the ISS

We present high-statistics, precision measurements by AMS of the detailed time and energy dependence of the primary cosmic-ray electron and positron fluxes over 79 Bartels rotations from May 2011 to

Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station.

High-statistics, precision measurements of the detailed time and energy dependence of the primary cosmic-ray electron flux and positron flux over 79 Bartels rotations from May 2011 to May 2017 in the energy range from 1 to 50 GeV show that the ratio exhibits a smooth transition over 830±30 days from one value to another.

Search for features in the cosmic-ray electron and positron spectrum measured by the Fermi Large Area Telescope

  • M. Mazziotta
  • Physics
    Journal of Physics: Conference Series
  • 2019
Over its ten years of mission the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope has collected the largest ever sample of high-energy cosmic-ray electron and positron events.

Anisotropies in the flux of cosmic ray electrons and positrons

High energy cosmic ray electrons and positrons probe the local properties of our galaxy. In fact, regardless of the production mechanism, electromagnetic energy losses limit the typical propagation
...

References

SHOWING 1-10 OF 48 REFERENCES

First result from the Alpha Magnetic Spectrometer on the International Space Station: precision measurement of the positron fraction in primary cosmic rays of 0.5-350 GeV.

The very accurate data show that the positron fraction is steadily increasing from 10 to ∼ 250  GeV, but, from 20 to 250 GeV, the slope decreases by an order of magnitude, showing the existence of new physical phenomena.

Cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV.

New results regarding negatively charged electrons between 1 and 625 GeV performed by the satellite-borne experiment PAMELA are presented, this is the first time that cosmic-ray e⁻ have been identified above 50 GeV.

Measurement of separate cosmic-ray electron and positron spectra with the fermi large area telescope.

The Fermi Large Area Telescope measured separate cosmic-ray electron and positron spectra to distinguish the two species by exploiting Earth's shadow, and it is confirmed that the fraction rises with energy in the 20-100 GeV range.

Cosmic-ray positron energy spectrum measured by PAMELA.

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray positron flux and fraction that extends previously published measurements up to 300 GeV in kinetic energy.

High statistics measurement of the positron fraction in primary cosmic rays of 0.5-500 GeV with the alpha magnetic spectrometer on the international space station.

The new results show, for the first time, that above ∼200  GeV the positron fraction no longer exhibits an increase with energy.

Cosmic-Ray Electrons and Positrons from 1 to 100 GeV: Measurements with HEAT and Their Interpretation

Measurements of the energy spectra of negative electrons and positrons have been performed with the High-Energy Antimatter Telescope (HEAT) in two balloon flights—1994 May from Fort Sumner, NM, and

Measurements of the absolute energy spectra of cosmic-ray positrons and electrons above 7 GeV

A measurement of the energy spectra of cosmic-ray positrons and electrons was made with a balloon-borne magnet- spectrometer, which was flown at a mean geomagnetic cut-o of 4.5 GV/c. The observed

Production and Propagation of Cosmic-Ray Positrons and Electrons

We have made a new calculation of the cosmic-ray secondary positron spectrum using a diffusive halo model for Galactic cosmic-ray propagation. The code computes self-consistently the spectra of

New limits on dark matter annihilation from Alpha Magnetic Spectrometer cosmic ray positron data.

The Alpha Magnetic Spectrometer experiment onboard the International Space Station has recently provided cosmic ray electron and positron data with unprecedented precision in the range from 0.5 to

Galactic secondary positron flux at the Earth

Context. Secondary positrons are produced by spallation of cosmic rays within the interstellar gas. Measurements have been typically expressed in terms of the positron fraction, which exhibits an