用GAMMA-400 Gamma-Ray望远镜观测Gamma和Cosmic-Ray
Gamma- and Cosmic-Ray Observations with the GAMMA-400 Gamma-Ray Telescope
摘要：
未来的天基伽马-400伽马射线望远镜将在俄罗斯天体物理观测台上运行7年，在高度椭圆轨道上观测银河平面、银河中心、费米气泡、蟹状星云、船帆座、天鹅座X、双子座、太阳和其他区域，并测量伽马射线和宇宙射线通量。将在点源模式下进行长时间连续观测（约100天）。伽马-400将测量能量范围从~20 MeV到几TeV的伽马射线和能量范围高达几十TeV的宇宙射线电子+正电子。伽马-400仪器将具有非常好的角度和能量分辨率，伽马射线与宇宙射线背景以及电子+正电子与质子的高分离效率。Gamma-400的主要特点是对能量大于30 GeV的伽马射线具有前所未有的角分辨率，比空间和地面伽马射线望远镜高出5-10倍。伽马-400观测将允许解析来自暗物质粒子湮灭或衰变的伽马射线，识别许多离散源，澄清扩展源的结构，指定宇宙射线电子+正电子谱的数据。
英文摘要：
The future space-based GAMMA-400 gamma-ray telescope will operate onboard the Russian astrophysical observatory in a highly elliptic orbit during 7 years to observe Galactic plane, Galactic Center, Fermi Bubbles, Crab, Vela, Cygnus X, Geminga, Sun, and other regions and measure gamma- and cosmic-ray fluxes. Observations will be performed in the point-source mode continuously for a long time (~100 days). GAMMA-400 will measure gamma rays in the energy range from ~20 MeV to several TeV and cosmic-ray electrons + positrons up to several tens TeV. GAMMA-400 instrument will have very good angle and energy resolutions, high separation efficiency of gamma rays from cosmic-ray background, as well as electrons + positrons from protons. The main feature of GAMMA-400 is the unprecedented angular resolution for energies >30 GeV better than the space-based and ground-based gamma-ray telescopes by a factor of 5-10. GAMMA-400 observations will permit to resolve gamma rays from annihilation or decay of dark matter particles, identify many discrete sources, clarify the structure of extended sources, specify the data on cosmic-ray electron + positron spectra.
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