High-energy gamma-ray studying with GAMMA-400

TL;DR

GAMMA-400 is a next-generation gamma-ray telescope designed to significantly improve angular and energy resolution in high-energy gamma-ray astronomy, enabling detailed studies of cosmic sources and dark matter.

Contribution

It introduces the GAMMA-400 telescope with unprecedented resolution capabilities, advancing the observational precision in gamma-ray astronomy beyond existing instruments.

Findings

Enhanced angular resolution (~0.01° at 100 GeV)

Improved energy resolution (~1% at 100 GeV)

Ability to resolve dark matter signals and discrete sources

Abstract

Extraterrestrial gamma-ray astronomy is now a source of new knowledge in the fields of astrophysics, cosmic-ray physics, and the nature of dark matter. The next absolutely necessary step in the development of extraterrestrial high-energy gamma-ray astronomy is the improvement of the physical and technical characteristics of gamma-ray telescopes, especially the angular and energy resolutions. Such a new generation telescope will be GAMMA-400. GAMMA-400, currently developing gamma-ray telescope, together with X-ray telescope will precisely and detailed observe in the energy range of ~20 MeV to ~1000 GeV and 3-30 keV the Galactic plane, especially, Galactic Center, Fermi Bubbles, Crab, Cygnus, etc. The GAMMA- 400 will operate in the highly elliptic orbit continuously for a long time with the unprecedented angular (~0.01{\deg} at E{\gamma} = 100 GeV) and energy (~1% at E{\gamma} = 100 GeV) resolutions better than the Fermi-LAT, as well as ground gamma-ray telescopes, by a factor of 5-10. GAMMA-400 will permit to resolve gamma rays from annihilation or decay of dark matter particles, identify many discrete sources (many of which are variable), to clarify the structure of extended sources, to specify the data on the diffuse emission.