HESS Observations of the Galactic Center Region and Their Possible Dark Matter Interpretation

Link:
Erscheinungsjahr:
2006
Medientyp:
Text
Schlagworte:
  • 98.70.Rz
  • 95.35.+d
  • 95.85.Pw
  • 98.35.Jk
  • gamma-ray sources
  • gamma-ray bursts
  • Dark matter
  • gamma-ray
  • Galactic center bar circumnuclear matter and bulge
  • Astrophysics
Beschreibung:
  • The detection of γ rays from the source HESS J1745-290 in the Galactic Center (GC) region with the High Energy Spectroscopic System (HESS) array of Cherenkov telescopes in 2004 is presented. After subtraction of the diffuse γ-ray emission from the GC ridge, the source is compatible with a point source with spatial extent less than 1.2′(stat) (95% C.L.). The measured energy spectrum above 160 GeV is compatible with a power law with photon index of 2.25±0.04(stat)±0.10(syst) and no significant flux variation is detected. It is finally found that the bulk of the very high energy emission must have non-dark-matter origin. © 2006 The American Physical Society.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/a24c5d72-edda-48b1-a720-0df488352521