High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S.

Aharonian, F.; Damascene Mbarubucyeye, J.; Boisson, C.; H. E. S. S. Collaboration; Rowell, G.; Moulin, E.; de Bony de Lavergne, M.; Khélifi, B.; Leitl, F.; Rieger, F.; Olivera-Nieto, L.; Devin, J.; Shapopi, J. N. S.; Lemoine-Goumard, M.; Marx, R.; Venter, C.; Bolmont, J.; Montanari, A.; Berge, D.; Einecke, S.; Ohm, S.; Klúzniak, W.; Parsons, D.; Kundu, A.; Kostunin, D.; Pühlhofer, G.; de Ona Wilhelmi, E.; Sharma, A.; Chibueze, O.; Böttcher, M.; Bruno, B.; Grolleron, G.; Backes, M.; Le Stum, S.; Punch, M.; Wach, T.; Hofmann, W.; Pensec, U.; Zech, A.; Heß, B.; Peron, G.; Wagner, S. J.; Marinos, P.; Egberts, K.; Schäfer, J.; Bernlöhr, K.; Steinmassl, S.; Zywucka, N.; Chand, T.; Bulik, T.; Cotter, G.; Santangelo, A.; Rudak, B.; Aschersleben, J.; Meyer, M.; Vink, J.; Djuvsland, J.; Kasai, E.; Brose, R.; Gallant, Y. A.; Reimer, O.; Holch, T. L.; Quirrenbach, A.; Takahashi, T.; Mitchell, A.; Sol, H.; Schutte, H. M.; Ravikularaman, S.; Terrier, R.; Katarzynski, K.; Funk, S.; Burger-Scheidlin, C.; Reimer, A.; Bi, B.; Celic, J.; Collins, T.; Jung-Richardt, I.; Feijen, K.; Salzmann, H.; Dmytriiev, A.; Huang, Zhiqiu; Moghadam, M. O.; Taylor, A. M.; Tsirou, M.; de Naurois, M.; Regeard, M.; Moderski, R.; Reis, I.; Chen, A.; Casanova, S.; Ashkar, H.; Fegan, S.; Mackey, J.; Ren, H.; Joshi, V.; Zdziarski, A. A.; Holler, M.; Marandon, V.; Reville, B.; Panny, S.; Niemiec, J.; Ostrowski, M.; Martí-Devesa, G.; Sasaki, M.; Steppa, C.; Brun, F.; Leuschner, F.; Komin, Nu.; Stawarz, L.; Chandra, S.; Batzofin, R.; Jamrozy, M.; van Eldik, C.; Barbosa Martins, V.; Jankowsky, F.; Mohrmann, L.; Fontaine, G.; Chibueze, J.; Kerszberg, D.; Horns, D.; Ruiz-Velasco, E.; Ait Benkhali, F.; Ernenwein, J.-P.; Lenain, J.-P.; Bylund, T.; Kosack, K.; Borowska, J.; Suzuki, H.; Brown, A.; Wierzcholska, A.; Becherini, Y.; Vecchi, M.; Gabici, S.; Glicenstein, J. F.; Lang, R. G.; Lemière, A.; Cerruti, M.; Schüssler, F.; Luashvili, A.; Spencer, S.; Bouyahiaoui, M.; Zacharias, M.; Tanaka, T.; Sahakian, V.; Khatoon, R.; Malyshev, D.; Glombitza, J.; Panter, M.

doi:10.1103/PhysRevLett.133.221001

Journal Article

PUBDB-2025-00578

High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S.

Aharonian, F. ; Ait Benkhali, F. ; Aschersleben, J. ; Ashkar, H. ; Backes, M. ; Barbosa Martins, V.DESY* ; Batzofin, R. ; Becherini, Y. ; Berge, D.DESY* ; Bernlöhr, K. ; Bi, B. ; Böttcher, M. ; Boisson, C. ; Bolmont, J. ; de Bony de Lavergne, M. ; Borowska, J. ; Bouyahiaoui, M. ; Brose, R. ; Brown, A. ; Brun, F. ; Bruno, B. ; Bulik, T. ; Burger-Scheidlin, C. ; Bylund, T. ; Casanova, S. ; Celic, J. ; Cerruti, M. ; Chand, T. ; Chandra, S. ; Chen, A. ; Chibueze, J. ; Chibueze, O. ; Collins, T. ; Cotter, G. ; Damascene Mbarubucyeye, J.DESY* ; Devin, J. ; Djuvsland, J. ; Dmytriiev, A. ; Egberts, K. (Corresponding author)Extern* ; Einecke, S. ; Ernenwein, J.-P. ; Fegan, S. ; Feijen, K. ; Fontaine, G. ; Funk, S. ; Gabici, S. ; Gallant, Y. A. ; Glicenstein, J. F. ; Glombitza, J. ; Grolleron, G. ; Heß, B. ; Hofmann, W. ; Holch, T. L.DESY* ; Holler, M. ; Horns, D. ; Huang, Z. ; Jamrozy, M. ; Jankowsky, F. ; Joshi, V. ; Jung-Richardt, I. ; Kasai, E. ; Katarzynski, K. ; Kerszberg, D. ; Khatoon, R. ; Khélifi, B. ; Klúzniak, W. ; Komin, N. ; Kosack, K. ; Kostunin, D.DESY* ; Kundu, A. ; Lang, R. G. ; Le Stum, S. ; Leitl, F. ; Lemière, A. ; Lemoine-Goumard, M. ; Lenain, J.-P. ; Leuschner, F. ; Luashvili, A. ; Mackey, J. ; Malyshev, D. ; Malyshev, D. ; Marandon, V. ; Marinos, P. ; Martí-Devesa, G. ; Marx, R. ; Meyer, M. ; Mitchell, A. ; Moderski, R. ; Moghadam, M. O. ; Mohrmann, L. ; Montanari, A. ; Moulin, E. ; de Naurois, M. ; Niemiec, J. ; Ohm, S.DESY* ; Olivera-Nieto, L. ; de Ona Wilhelmi, E.DESY* ; Ostrowski, M. ; Panny, S. ; Panter, M. ; Parsons, D. ; Pensec, U. ; Peron, G. ; Pühlhofer, G. ; Punch, M. ; Quirrenbach, A. ; Ravikularaman, S. ; Regeard, M. ; Reimer, A. ; Reimer, O. ; Reis, I. ; Ren, H. ; Reville, B. ; Rieger, F. ; Rowell, G. ; Rudak, B. ; Ruiz-Velasco, E. ; Sahakian, V. ; Salzmann, H. ; Santangelo, A. ; Sasaki, M. ; Schäfer, J. ; Schüssler, F. ; Schutte, H. M. ; Shapopi, J. N. S. ; Sharma, A. ; Sol, H. ; Spencer, S. ; Stawarz, L. ; Steinmassl, S. ; Steppa, C. ; Suzuki, H. ; Takahashi, T. ; Tanaka, T. ; Taylor, A. M.DESY* ; Terrier, R. ; Tsirou, M.DESY* ; van Eldik, C. ; Vecchi, M. ; Venter, C. ; Vink, J. ; Wach, T. ; Wagner, S. J. ; Wierzcholska, A. ; Zacharias, M. ; Zdziarski, A. A. ; Zech, A. ; Zywucka, N. ; H. E. S. S. Collaboration (Collaboration Author)

2024
APS College Park, Md.

Physical review letters 133(22), 221001 (2024) [10.1103/PhysRevLett.133.221001]

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Please use a persistent id in citations: doi:10.1103/PhysRevLett.133.221001 doi:10.3204/PUBDB-2025-00578

Report No.: arXiv:2411.08189

Abstract: Owing to their rapid cooling rate and hence loss-limited propagation distance, cosmic-ray electrons and positrons (CRe) at very high energies probe local cosmic-ray accelerators and provide constraints on exotic production mechanisms such as annihilation of dark matter particles. We present a high-statistics measurement of the spectrum of CRe candidate events from 0.3 to 40 TeV with the High Energy Stereoscopic System, covering 2 orders of magnitude in energy and reaching a proton rejection power of better than 104. The measured spectrum is well described by a broken power law, with a break around 1 TeV, where the spectral index increases from Γ1=3.25±0.02(stat)±0.2(sys) to Γ2=4.49±0.04(stat)±0.2(sys). Apart from the break, the spectrum is featureless. The absence of distinct signatures at multi-TeV energies imposes constraints on the presence of nearby CRe accelerators and the local CRe propagation mechanisms.

Classification:

ddc:530

Note: Phys. Rev. Lett. 133, 221001 (2024). PhysRevLett.133.221001. main paper: 8 pages, 4 figures, supplemental material: 12 pages, 14 figures, accepted for publication in Physical Review Letters https://journals.aps.org/prl/

Contributing Institute(s):

Gammaastronomie (Z_GA)

Research Program(s):

613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)

Experiment(s):

High Energy Stereoscopic System

Appears in the scientific report 2024

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Record created 2025-01-31, last modified 2025-07-15

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