论文标题
lhaaso的敏感性对来自银河系的弥漫性伽马射线信号
LHAASO sensitivity for diffuse gamma-ray signals from the Galaxy
论文作者
论文摘要
我们估计LHAASO望远镜对多TEV-多PEV能量范围内的大角度尺度扩散γ射线通量的灵敏度。我们讨论了该能量范围内信号的可能来源，包括星际介质中宇宙射线相互作用的保证通量以及腐烂的暗物质的可能通量。我们表明，Lhaaso将能够检测到弥漫性宇宙射线诱导的伽马射线通量，直至高银河纬度区域，从而为iCecube检测到的天体中微子信号的银河系宇宙射线成分提供了牢固的识别，并通过iCecube和澄清宇宙射线射线射线光谱的膝盖特征。将弥漫性通量灵敏度与暗物质衰减的弥漫性伽马射线通量进行比较，我们表明Lhaaso将能够检测到从PEV-EEV质量衰减的PEV-EEV质量衰减的伽玛射线信号，最高为3E29 s。
We estimate the sensitivity of LHAASO telescope for the large angular scale diffuse gamma-ray flux in multi-TeV - multi-PeV energy range. We discuss possible sources of the signal in this energy range including the guaranteed flux from cosmic ray interactions in the interstellar medium and possible flux from decaying dark matter. We show that LHAASO will be able to detect the diffuse cosmic ray induced gamma-ray flux up to high Galactic latitude regions thus providing firm identification of the Galactic cosmic ray component of the astrophysical neutrino signal detected by IceCube and clarification of the nature of the knee feature of the cosmic ray spectrum. Comparing the diffuse flux sensitivity with the diffuse gamma-ray flux expected from the dark matter decays, we show LHAASO will be able to detect the gamma-ray signal from dark matter particles of PeV-EeV mass decaying on the time scale up to 3e29 s.
