High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S.
dc.contributor.author | Aharonian, F. | |
dc.contributor.author | Benkhali, F.A. | |
dc.contributor.author | Aschersleben, J. | |
dc.contributor.author | Ashkar, H. | |
dc.contributor.author | Backes, M. | |
dc.contributor.author | Martins, V.B. | |
dc.contributor.author | Batzofin, R. | |
dc.contributor.author | Becherini, Y. | |
dc.contributor.author | Berge, D. | |
dc.contributor.author | Bernlöhr, K. | |
dc.contributor.author | Bi, B. | |
dc.contributor.author | Böttcher, M. | |
dc.contributor.author | Boisson, C. | |
dc.contributor.author | Bolmont, J. | |
dc.contributor.author | De Lavergne, M.D.B. | |
dc.contributor.author | Borowska, J. | |
dc.contributor.author | Bouyahiaoui, M. | |
dc.contributor.author | Brose, R. | |
dc.contributor.author | Brown, A. | |
dc.contributor.author | Brun, F. | |
dc.contributor.author | et al. | |
dc.date.issued | 2024 | |
dc.description.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. | |
dc.description.statementofresponsibility | H.E.S.S. Collaboration | |
dc.identifier.citation | Physical Review Letters, 2024; 133(22):221001-1-221001-8 | |
dc.identifier.doi | 10.1103/PhysRevLett.133.221001 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.issn | 1079-7114 | |
dc.identifier.orcid | Einecke, S. [0000-0001-9687-8237] | |
dc.identifier.uri | https://hdl.handle.net/2440/144402 | |
dc.language.iso | en | |
dc.publisher | American Physical Society (APS) | |
dc.relation.grant | ARC | |
dc.rights | © 2024 American Physical Society | |
dc.source.uri | https://doi.org/10.1103/physrevlett.133.221001 | |
dc.subject | Cosmic ray composition & spectra; Cosmic rays & astroparticles; Gamma ray astronomy | |
dc.title | High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S. | |
dc.type | Journal article | |
pubs.publication-status | Published |
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