New limit on high Galactic latitude PeV γ-ray flux from Tibet ASγ data - Archive ouverte HAL Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2021

New limit on high Galactic latitude PeV γ-ray flux from Tibet ASγ data

(1) , (1) ,
1
A. Neronov
  • Function : Correspondent author
Ie. Vovk
  • Function : Author

Abstract

The Tibet ASγ collaboration has recently reported the detection of γ-rays with energies up to Peta-electronvolt from parts of the Galactic plane. We note that the analysis of γ-ray flux by the Tibet-ASγ experiment also implies an upper bound on the diffuse γ-ray flux from high Galactic latitudes (|b|> 20°) in the energy range between 100 TeV and 1 PeV. This bound is up to an order of magnitude stronger than previously derived bounds from GRAPES3, KASCADE, and CASA-MIA experiments. We discuss the new Tibet-ASγ limit on the high Galactic latitude γ-ray flux in the context of possible mechanisms of multi-messenger (γ-ray and neutrino) emission from nearby cosmic ray sources, dark matter decays, and the large-scale cosmic ray halo of the Milky Way.
Fichier principal
Vignette du fichier
aa41800-21.pdf (846.44 Ko) Télécharger le fichier
Origin : Publication funded by an institution

Dates and versions

hal-03345889 , version 1 (15-09-2021)

Identifiers

Cite

A. Neronov, D. Semikoz, Ie. Vovk. New limit on high Galactic latitude PeV γ-ray flux from Tibet ASγ data. Astronomy and Astrophysics - A&A, 2021, 653, pp.L4. ⟨10.1051/0004-6361/202141800⟩. ⟨hal-03345889⟩
35 View
24 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More