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Article: Measurement of the cosmic ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite

TitleMeasurement of the cosmic ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite
Authors
KeywordsCosmic ray measurement
Cosmic rays
Galaxies
Germanium compounds
Kinetic energy
Issue Date2019
PublisherAmerican Association for the Advancement of Science: Science Advances. The Journal's web site is located at http://www.scienceadvances.org/
Citation
Science Advances, 2019, v. 5 n. 9, p. article no. eaax3793 How to Cite?
AbstractThe precise measurement of the spectrum of protons, the most abundant component of the cosmic radiation, is necessary to understand the source and acceleration of cosmic rays in the Milky Way. This work reports the measurement of the cosmic ray proton fluxes with kinetic energies from 40 GeV to 100 TeV, with 2 1/2 years of data recorded by the DArk Matter Particle Explorer (DAMPE). This is the first time that an experiment directly measures the cosmic ray protons up to ~100 TeV with high statistics. The measured spectrum confirms the spectral hardening at ~300 GeV found by previous experiments and reveals a softening at ~13.6 TeV, with the spectral index changing from ~2.60 to ~2.85. Our result suggests the existence of a new spectral feature of cosmic rays at energies lower than the so-called knee and sheds new light on the origin of Galactic cosmic rays.
Persistent Identifierhttp://hdl.handle.net/10722/279486
ISSN
2019 Impact Factor: 13.116
PubMed Central ID

 

DC FieldValueLanguage
dc.contributor.authorAn, Q-
dc.contributor.authorAsfandiyarov, R-
dc.contributor.authorAzzarello, P-
dc.contributor.authorBernardini, P-
dc.contributor.authorBi, XJ-
dc.contributor.authorCai, MS-
dc.contributor.authorChang, J-
dc.contributor.authorChen, DY-
dc.contributor.authorChen, HF-
dc.contributor.authorChen, JL-
dc.contributor.authorChen, W-
dc.contributor.authorHuang, YY-
dc.contributor.authorIonica, M-
dc.contributor.authorJiang, W-
dc.contributor.authorJin, X-
dc.contributor.authorKong, J-
dc.contributor.authorLei, SJ-
dc.contributor.authorLi, S-
dc.contributor.authorLi, WL-
dc.contributor.authorLi, X-
dc.contributor.authorLi, XQ-
dc.contributor.authorWang, Q-
dc.contributor.authorLi, Y-
dc.contributor.authorLiang, YF-
dc.contributor.authorLiang, YM-
dc.contributor.authorLiao, NH-
dc.contributor.authorLiu, CM-
dc.contributor.authorLiu, H-
dc.contributor.authorLiu, J-
dc.contributor.authorLiu, SB-
dc.contributor.authorLiu, WQ-
dc.contributor.authorLiu, Y-
dc.contributor.authorWang, S-
dc.contributor.authorLoparco, F-
dc.contributor.authorLuo, CN-
dc.contributor.authorMa, M-
dc.contributor.authorMa, PX-
dc.contributor.authorMa, SY-
dc.contributor.authorMa, T-
dc.contributor.authorMa, XY-
dc.contributor.authorMarsella, G-
dc.contributor.authorMazziotta, MN-
dc.contributor.authorMo, D-
dc.contributor.authorWang, XH-
dc.contributor.authorNiu, XY-
dc.contributor.authorPan, X-
dc.contributor.authorPeng, WX-
dc.contributor.authorPeng, XY-
dc.contributor.authorQiao, R-
dc.contributor.authorRao, JN-
dc.contributor.authorSalinas, MM-
dc.contributor.authorShang, GZ-
dc.contributor.authorShen, WH-
dc.contributor.authorShen, ZQ-
dc.contributor.authorWang, XL-
dc.contributor.authorShen, ZT-
dc.contributor.authorSong, JX-
dc.contributor.authorSu, H-
dc.contributor.authorSu, M-
dc.contributor.authorSun, ZY-
dc.contributor.authorSurdo, A-
dc.contributor.authorTeng, XJ-
dc.contributor.authorTykhonov, A-
dc.contributor.authorVitillo, S-
dc.contributor.authorWang, C-
dc.contributor.authorWang, YF-
dc.contributor.authorWang, H-
dc.contributor.authorWang, HY-
dc.contributor.authorWang, JZ-
dc.contributor.authorWang, LG-
dc.contributor.authorWang, YP-
dc.contributor.authorWang, YZ-
dc.contributor.authorWang, ZM-
dc.contributor.authorWei, DM-
dc.contributor.authorWei, JJ-
dc.contributor.authorCui, MY-
dc.contributor.authorWei, YF-
dc.contributor.authorWen, SC-
dc.contributor.authorWu, D-
dc.contributor.authorWu, J-
dc.contributor.authorWu, LB-
dc.contributor.authorWu, SS-
dc.contributor.authorWu, X-
dc.contributor.authorXi, K-
dc.contributor.authorXia, ZQ-
dc.contributor.authorXu, HT-
dc.contributor.authorCui, TS-
dc.contributor.authorXu, ZH-
dc.contributor.authorXu, ZL-
dc.contributor.authorXu, ZZ-
dc.contributor.authorXue, GF-
dc.contributor.authorYang, HB-
dc.contributor.authorYang, P-
dc.contributor.authorYang, YQ-
dc.contributor.authorYang, ZL-
dc.contributor.authorYao, HJ-
dc.contributor.authorYu, YH-
dc.contributor.authorDai, HT-
dc.contributor.authorYuan, Q-
dc.contributor.authorYue, C-
dc.contributor.authorZang, JJ-
dc.contributor.authorZhang, F-
dc.contributor.authorZhang, JY-
dc.contributor.authorZhang, JZ-
dc.contributor.authorZhang, PF-
dc.contributor.authorZhang, SX-
dc.contributor.authorZhang, WZ-
dc.contributor.authorZhang, Y-
dc.contributor.authorD’Amone, A-
dc.contributor.authorZhang, YJ-
dc.contributor.authorZhang, YL-
dc.contributor.authorZhang, YP-
dc.contributor.authorZhang, YQ-
dc.contributor.authorZhang, Z-
dc.contributor.authorZhang, ZY-
dc.contributor.authorZhao, H-
dc.contributor.authorZhao, HY-
dc.contributor.authorZhao, XF-
dc.contributor.authorZhou, CY-
dc.contributor.authorDe Benedittis, A-
dc.contributor.authorZhou, Y-
dc.contributor.authorZhu, X-
dc.contributor.authorZhu, Y-
dc.contributor.authorZimmer, S-
dc.contributor.authorDe Mitri, I-
dc.contributor.authorDi Santo, M-
dc.contributor.authorDing, M-
dc.contributor.authorDong, TK-
dc.contributor.authorDong, YF-
dc.contributor.authorDong, ZX-
dc.contributor.authorDonvito, G-
dc.contributor.authorDroz, D-
dc.contributor.authorDuan, JL-
dc.contributor.authorDuan, KK-
dc.contributor.authorD’Urso, D-
dc.contributor.authorFan, RR-
dc.contributor.authorFan, YZ-
dc.contributor.authorFang, F-
dc.contributor.authorFeng, CQ-
dc.contributor.authorFeng, L-
dc.contributor.authorFusco, P-
dc.contributor.authorGallo, V-
dc.contributor.authorGan, FJ-
dc.contributor.authorGao, M-
dc.contributor.authorGargano, F-
dc.contributor.authorGong, K-
dc.contributor.authorGong, YZ-
dc.contributor.authorGuo, DY-
dc.contributor.authorGuo, JH-
dc.contributor.authorGuo, XL-
dc.contributor.authorHan, SX-
dc.contributor.authorHu, YM-
dc.contributor.authorHuang, GS-
dc.contributor.authorHuang, XY-
dc.date.accessioned2019-11-01T07:18:18Z-
dc.date.available2019-11-01T07:18:18Z-
dc.date.issued2019-
dc.identifier.citationScience Advances, 2019, v. 5 n. 9, p. article no. eaax3793-
dc.identifier.issn2375-2548-
dc.identifier.urihttp://hdl.handle.net/10722/279486-
dc.description.abstractThe precise measurement of the spectrum of protons, the most abundant component of the cosmic radiation, is necessary to understand the source and acceleration of cosmic rays in the Milky Way. This work reports the measurement of the cosmic ray proton fluxes with kinetic energies from 40 GeV to 100 TeV, with 2 1/2 years of data recorded by the DArk Matter Particle Explorer (DAMPE). This is the first time that an experiment directly measures the cosmic ray protons up to ~100 TeV with high statistics. The measured spectrum confirms the spectral hardening at ~300 GeV found by previous experiments and reveals a softening at ~13.6 TeV, with the spectral index changing from ~2.60 to ~2.85. Our result suggests the existence of a new spectral feature of cosmic rays at energies lower than the so-called knee and sheds new light on the origin of Galactic cosmic rays.-
dc.languageeng-
dc.publisherAmerican Association for the Advancement of Science: Science Advances. The Journal's web site is located at http://www.scienceadvances.org/-
dc.relation.ispartofScience Advances-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectCosmic ray measurement-
dc.subjectCosmic rays-
dc.subjectGalaxies-
dc.subjectGermanium compounds-
dc.subjectKinetic energy-
dc.titleMeasurement of the cosmic ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite-
dc.typeArticle-
dc.identifier.emailSu, M: mengsu84@hku.hk-
dc.identifier.authoritySu, M=rp02150-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1126/sciadv.aax3793-
dc.identifier.pmid31799401-
dc.identifier.pmcidPMC6868675-
dc.identifier.scopuseid_2-s2.0-85072801681-
dc.identifier.hkuros308609-
dc.identifier.volume5-
dc.identifier.issue9-
dc.identifier.spagearticle no. eaax3793-
dc.identifier.epagearticle no. eaax3793-
dc.publisher.placeUnited States-

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