0000000000631347

AUTHOR

Xiangpeng Guo

showing 2 related works from this author

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

2019

DAMPE satellite has directly measured the cosmic ray proton spectrum from 40 GeV to 100 TeV and revealed a new feature at about 13.6 TeV.

dark matter cosmic rays spaceProtonMilky WayAstrophysics::High Energy Astrophysical PhenomenaDark matterFOS: Physical sciencesCosmic rayAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsKinetic energy01 natural sciences0103 physical sciences010306 general physicsNuclear ExperimentResearch ArticlesPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Spectral indexMultidisciplinary010308 nuclear & particles physicsPhysicsHigh Energy Physics::PhenomenologySettore FIS/01 - Fisica SperimentaleSciAdv r-articlesPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentAstrophysics - High Energy Astrophysical PhenomenaResearch Article
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Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

2021

The measurement of the energy spectrum of cosmic ray helium nuclei from 70 GeV to 80 TeV using 4.5 years of data recorded by the DArk Matter Particle Explorer (DAMPE) is reported in this work. A hardening of the spectrum is observed at an energy of about 1.3 TeV, similar to previous observations. In addition, a spectral softening at about 34 TeV is revealed for the first time with large statistics and well controlled systematic uncertainties, with an overall significance of $4.3\sigma$. The DAMPE spectral measurements of both cosmic protons and helium nuclei suggest a particle charge dependent softening energy, although with current uncertainties a dependence on the number of nucleons canno…

Astrophysics::High Energy Astrophysical PhenomenaDark matterGeneral Physics and Astronomychemistry.chemical_elementFOS: Physical sciencesCosmic raySpace (mathematics)01 natural sciences7. Clean energyCosmic ray heliumHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciencesEnergy spectrumcosmic rays dark matter spacecrystals010306 general physicsHeliumPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)COSMIC cancer databasedetectorSettore FIS/01 - Fisica SperimentalecalibrationchemistryParticleAstrophysics - High Energy Astrophysical PhenomenaNucleonperformance
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