High-energy gamma-ray studying with GAMMA-400 after Fermi-LAT

International Conference on Particle Physics and Astrophysics

物理学;天文学

Topchiev, N.P.^1 ; Galper, A.M.^1,2 ; Bonvicini, V.^3 ; Adriani, O.^4 ; Arkhangelskaja, I.V.^2 ; Arkhangelskiy, A.I.^2 ; Bakaldin, A.V.^5 ; Bobkov, S.G.^5 ; Boezio, M.^3 ; Dalkarov, O.D.^1 ; Egorov, A.E.^1 ; Gorbunov, M.S.^5 ; Gusakov, Yu.V.^1 ; Hnatyk, B.I.^6 ; Kadilin, V.V.^2 ; Kaplin, V.A.^2 ; Kheymits, M.D.^2 ; Korepanov, V.E.^7 ; Leonov, A.A.^1,2 ; Longo, F.^3 ; Mikhailov, V.V.^2 ; Mocchiutti, E.^3 ; Moiseev, A.A.^8 ; Moskalenko, I.V.^9 ; Naumov, P Yu^2 ; Picozza, P.^10 ; Runtso, M.F.^2 ; Serdin, O.V.^5 ; Sparvoli, R.^10 ; Spillantini, P.^4 ; Stozhkov, Yu I^1 ; Suchkov, S.I.^1 ; Taraskin, A.A.^2 ; Tavani, M.^11 ; Yurkin, Yu T^2 ; Zverev, V.G.^1

Lebedev Physical Institute, Russian Academy of Sciences, Leninskiy pr. 53, Moscow

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, Via Valerio 2, Trieste

34127, Italy^3

Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, Via G. Sansone 1, Firenze

50019, Italy^4

Federal State Institution, Scientific Research Institute for System Analysis, Russian Academy of Sciences, Nakhimovskiy pr. 36, Moscow

117218, Russia^5

Taras Shevchenko National University, Volodymyrska street 64/13, Kyiv

01601, Ukraine^6

Lviv Center of Institute of Space Research, Naukova street 5-A, Lviv, Ukraine^7

CRESST, Astroparticle Physics Laboratory NASA, GSFC, Greenbelt

MD

20771, United States^8

Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics, SLAC National Accelerator Laboratory, Stanford University, Stanford

CA

94305, United States

(10) Istituto Nazionale di Fisica Nucleare, Sezione di Roma 2, Physics Department, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, Rome

00133, Italy

(11) Istituto Nazionale di Astrofisica, Physics Department, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, Rome

00133, Italy^9

关键词: Dark matter particles;    Diffuse emission;    Discrete sources;    Extended sources;    Galactic Center;    Gamma ray sources;    Gamma ray telescope;    Gamma-ray emission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012011/pdf
DOI  :  10.1088/1742-6596/798/1/012011

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Fermi-LAT has made a significant contribution to the study of high-energy gamma-ray diffuse emission and the observation of ∼3000 discrete sources. However, one third of all gamma-ray sources (both galactic and extragalactic) are unidentified, the data on the diffuse gamma-ray emission should be clarified, and signatures of dark matter particles in the high-energy gamma-ray range are not observed up to now. GAMMA-400, currently developing gamma-ray telescope, will have the angular (∼0.01° at 100 GeV) and energy (∼1% at 100 GeV) resolutions in the energy range of 10-1000 GeV better than the Fermi-LAT (as well as ground gamma-ray telescopes) by a factor of 5-10 and observe some regions of the Universe (such as Galactic Center, Fermi Bubbles, Crab, Cygnus, etc.) in the highly elliptic orbit (without shading the telescope by the Earth) continuously for a long time. It will permit to identify many discrete sources, to clarify the structure of extended sources, to specify the data on the diffuse emission, and to resolve gamma rays from dark matter particles.