The GAMMA-400 gamma-ray telescope for precision gamma-ray emission investigations

[摘要] The GAMMA-400 gamma-ray telescope with excellent angular and energy resolutions is designed to search for signatures of dark matter in the fluxes of gamma-ray emission and electrons + positrons. Precision investigations of gamma-ray emission from Galactic Center, Crab, Vela, Cygnus, Geminga, and other regions will be performed, as well as diffuse gamma-ray emission, along with measurements of high-energy electron + positron and nuclei fluxes. Furthermore, it will study gamma-ray bursts and gamma-ray emission from the Sun during periods of solar activity. The GAMMA-400 energy range is expected to be from ∼20 MeV up to TeV energies for gamma rays, up to 10 TeV for electrons + positrons, and up to 1015eV for cosmic-ray nuclei. For 100-GeV gamma rays, the GAMMA-400 angular resolution is ∼0.01° and energy resolution is ∼1%; the proton rejection factor is ∼5x105. GAMMA-400 will be installed onboard the Russian space observatory.

[发布机构] Lebedev Physical Institute, Moscow; RU-119991, Russia^1;National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow; 115409, Russia^2;Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Trieste; I-34149, Italy^3;Istituto Nazionale di Fisica Nucleare, Sezione di Florence, Sesto Fiorentino Florence; I-50019, Italy^4;Ioffe Physical Technical Institute, St.-Petersburg; RU-194021, Russia^5;Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova University Center, Stockholm; SE-106 91, Sweden^6;Department of Physical Sciences, Earth and Environment, University of Siena, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Italy^7;Scientific Research Institute for System Analysis, Moscow; RU-117218, Russia^8;Istituto di Fisica Applicata Nello Carrara, Sesto Fiorentino, Florence; I-50019, Italy; (10) Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia; I-27100, Italy; (11) Istituto Nazionale di Fisica Nucleare, Sezione di Rome Tor Vergata, Rome; I-00133, Italy; (12) Departament d'Astronomia i Meteorologia, Institut de Ciències Del Cosmos, Universitat de Barcelona, Spain; (13) Taras Shevchenko National University, Kyiv; 01601, Ukraine; (14) Lviv Center, Institute of Space Research, Lviv; 79060, Ukraine; (15) KTH Royal Institute of Technology, Department of Physics, Oskar Klein Centre, AlbaNova University Center, Stockholm; SE-10691, Sweden; (16) Institut de Fisica d'Altes Energies, Bellaterra, Spain; (17) Research Institute for Electromechanics, Istra Moscow region; RU-143502, Russia; (18) NASA Goddard Space Flight Center, CRESST/University of Maryland, Greenbelt; MD; 20771, United States; (19) Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford; CA; 94305, United States; (20) Istituto Nazionale di Astrofisica IASF, Physics Department, University of Rome Tor Vergata, Rome; I-00133, Italy; (21) Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Troitsk, Moscow region, Russia^9

[关键词] Angular resolution;Cosmic-ray nucleus;Energy resolutions;Gamma ray bursts;Gamma ray telescope;Gamma-ray emission;High-energy electron;Space observatories