报告题目：A fading particle accelerator for multi-TeV emissions in the Galactic Center
报告人：柳若愚（Max Planck Institute for Nuclear Physics, Heidelberg）
报告摘要: Diffuse TeV emissions has been discovered surrounding the Galactic center out to a radius of 200pc. The spectrum is consistent with a power-law spectrum up to tens of TeV without a break or a cutoff. Such discoveries suggest a hadronic origin of the diffuse emissions, and imply a petaelectronvolt proton accelerator inside the inner ~10pc region of the GC. On the other hand, the point source HESS J1745?290 inside the 10pc region shows a cutoff in the spectrum around 10TeV. In this talk, I will firstly review the observations of the entire GC region by HESS, and then discuss the possiblity of explaining the spectra of HESS1745-290 and CMZ simultaneously by a fading particle accelerator inside the inner 10pc region of the GC.