Vela as the Source of Galactic Cosmic Rays above 100 TeV

Abstract

We model the contribution of the nearest young supernova remannt Vela to the local cosmic ray flux taking into account both the influence of the Local Superbubble and the effect of anisotropic diffusion. The dominant contribution of this source in the energy region around the cosmic ray knee can naturally explain the observed fluxes of individual groups of nuclei and their total flux. Adding the CR flux from a 2-3 Myr old local CR source suggested earlier, the CR spectra in the whole energy range between 200 GeV and the transition to extragalactic CRs are described well by the combined fluxes from these two local Galactic sources.

11 pages, 6 figures

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• LHAASO sensitivity for diffuse gamma-ray signals from the Galaxy
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• High-energy neutrinos from cosmic ray interactions in the Local Bubble
• The coherent magnetic field of the Milky Way halo, Local Bubble and Fan Region
• Energy dependence of the knee in the cosmic ray spectrum across the Milky Way
• Mapping large-scale diffuse gamma-ray emission in 10-100 TeV band with Cherenkov telescopes
• Sedimentary rocks from Mediterranean drought in the Messinian age as a probe of the past cosmic ray flux
• Hot spots in the neutrino flux created by cosmic rays from Cygnus and Vela?
• New limit on high Galactic latitude PeV gamma-ray flux from Tibet AS-gamma data