Measurement of the Cosmic Ray e++e- Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

Abdo, A. A.

doi:10.1103/PhysRevLett.102.181101

Title: Measurement of the Cosmic Ray $e^{+} + e^{-}$ Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

Journal Article · 03 May 2009 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.102.181101 · OSTI ID:1357449

Abdo, A. A. ^[1]

Naval Research Lab. (NRL), Washington, DC (United States); National Academy of Sciences, Washington, DC (United States); et al.

Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m² sr at 300 GeV. Building on the gamma-ray analysis, we have developed in this paper an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E^-3.0 and does not exhibit prominent spectral features. Finally, interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Contributing Organization:: Fermi LAT Collaboration

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1357449

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 102; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Anomalous positron excess from Lorentz-violating QED Andrianov, Alexander A.; Espriu, Domenec; Giacconi, Paola arXiv https://doi.org/10.48550/arxiv.0907.3709	text	January 2009
Leptophilic Dark Matter from the Lepton Asymmetry Cohen, Timothy; Zurek, Kathryn M. arXiv https://doi.org/10.48550/arxiv.0909.2035	text	January 2009
The Dark Side of the Electroweak Phase Transition Das, Subinoy; Fox, Patrick J.; Kumar, Abhishek arXiv https://doi.org/10.48550/arxiv.0910.1262	text	January 2009
Dark Matter Self-Interactions and Light Force Carriers Fox, Matthew R. Buckley Patrick J. arXiv https://doi.org/10.48550/arxiv.0911.3898	text	January 2009
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Positronium Portal into Hidden Sector: A new Experiment to Search for Mirror Dark Matter Crivelli, Paolo; Belov, Alexander; Gendotti, Ulisse arXiv https://doi.org/10.48550/arxiv.1005.4802	text	January 2010
Gamma-ray Signal from Earth-mass Dark Matter Microhalos Ishiyama, Tomoaki; Makino, Junichiro; Ebisuzaki, Toshikazu arXiv https://doi.org/10.48550/arxiv.1006.3392	text	January 2010
Metastable GeV-scale particles as a solution to the cosmological lithium problem Pospelov, Maxim; Pradler, Josef arXiv https://doi.org/10.48550/arxiv.1006.4172	text	January 2010
Decaying Dark Matter in Supersymmetric Model and Cosmic-Ray Observations Ishiwata, Koji; Matsumoto, Shigeki; Moroi, Takeo arXiv https://doi.org/10.48550/arxiv.1008.3636	text	January 2010
The Crab Nebula as a standard candle in very high-energy astrophysics Meyer, M.; Horns, D.; Zechlin, H. -S. arXiv https://doi.org/10.48550/arxiv.1008.4524	text	January 2010
Weak Corrections are Relevant for Dark Matter Indirect Detection Ciafaloni, Paolo; Comelli, Denis; Riotto, Antonio arXiv https://doi.org/10.48550/arxiv.1009.0224	text	January 2010
The 511 keV emission from positron annihilation in the Galaxy Prantzos, N.; Boehm, C.; Bykov, A. M. arXiv https://doi.org/10.48550/arxiv.1009.4620	text	January 2010
Constraints on cosmic-ray propagation models from a global Bayesian analysis Trotta, R.; Johannesson, G.; Moskalenko, I. V. arXiv https://doi.org/10.48550/arxiv.1011.0037	text	January 2010
Current and Future Constraints on Dark Matter from Prompt and Inverse-Compton Photon Emission in the Isotropic Diffuse Gamma-ray Background Abazajian, Kevork N.; Blanchet, Steve; Harding, J. Patrick arXiv https://doi.org/10.48550/arxiv.1011.5090	text	January 2010
The interstellar cosmic-ray electron spectrum from synchrotron radiation and direct measurements Strong, A. W.; Orlando, E.; Jaffe, T. R. arXiv https://doi.org/10.48550/arxiv.1108.4822	text	January 2011
Fermi-LAT Observations of the Diffuse Gamma-Ray Emission: Implications for Cosmic Rays and the Interstellar Medium Collaboration, Lat arXiv https://doi.org/10.48550/arxiv.1202.4039	text	January 2012
Diffuse Galactic Gamma Rays from Shock-Accelerated Cosmic Rays Dermer, Charles D. arXiv https://doi.org/10.48550/arxiv.1206.2899	text	January 2012
Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV Collaboration, Cms arXiv https://doi.org/10.48550/arxiv.1206.4071	text	January 2012
Low energy cosmic ray positron fraction explained by charge-sign dependent solar modulation Maccione, Luca arXiv https://doi.org/10.48550/arxiv.1211.6905	text	January 2012
Current Dark Matter Annihilation Constraints from CMB and Low-Redshift Data Madhavacheril, Mathew S.; Sehgal, Neelima; Slatyer, Tracy R. arXiv https://doi.org/10.48550/arxiv.1310.3815	text	January 2013
Imprint of Multi-component Dark Matter on AMS-02 Geng, Chao-Qiang; Huang, Da; Tsai, Lu-Hsing arXiv https://doi.org/10.48550/arxiv.1312.0366	text	January 2013
Strong Optimized Conservative Fermi-LAT Constraints on Dark Matter Models from the Inclusive Photon Spectrum Massari, Andrea; Izaguirre, Eder; Essig, Rouven arXiv https://doi.org/10.48550/arxiv.1503.07169	text	January 2015
Planck 2015 results. XXV. Diffuse low-frequency Galactic foregrounds Collaboration, Planck; Ade, P. A. R.; Aghanim, N. arXiv https://doi.org/10.48550/arxiv.1506.06660	text	January 2015
Neutrino Physics with JUNO An, Fengpeng; An, Guangpeng; An, Qi arXiv https://doi.org/10.48550/arxiv.1507.05613	text	January 2015
Cosmological constraints to dark matter with two- and many-body decays Blackadder, Gordon; Koushiappas, Savvas M. arXiv https://doi.org/10.48550/arxiv.1510.06026	text	January 2015
A review of indirect searches for particle dark matter Gaskins, Jennifer M. arXiv https://doi.org/10.48550/arxiv.1604.00014	text	January 2016
All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore Collaboration, IceCube; Aartsen, M. G.; Abraham, K. arXiv https://doi.org/10.48550/arxiv.1606.00209	text	January 2016
The Gluon condensation in high energy cosmic rays Zhu, Wei; Lan, Jiangshan; Ruan, Jianhong arXiv https://doi.org/10.48550/arxiv.1709.03897	text	January 2017
Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons Ambrosi, G.; An, Q.; Asfandiyarov, R. arXiv https://doi.org/10.48550/arxiv.1711.10981	text	January 2017
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Dark matter direct detection signals inferred from a cosmological N-body simulation with baryons Ling, F. S.; Nezri, E.; Athanassoula, E. Institute of Physics Publishing https://doi.org/10.5167/uzh-34435	text	January 2010
Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy Consortium, Cta; Actis, M.; Florin, D. Springer https://doi.org/10.5167/uzh-58883	text	January 2011

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