摘要

<正>Ultrahigh-energy(UHE) photons up to 1.4 peta-electronvolts have been observed by new cosmic-ray telescope in China [1] – a hint that Lorentz invariance might break down at the Planck-scale level [2].As one of the most sensitive gamma-ray detector arrays currently operating in the UHE band,

  • 单位
    核物理与核技术国家重点实验室; 北京大学