68 research outputs found
Dark Matter Search Perspectives with GAMMA-400
GAMMA-400 is a future high-energy gamma-ray telescope, designed to measure
the fluxes of gamma-rays and cosmic-ray electrons + positrons, which can be
produced by annihilation or decay of dark matter particles, and to survey the
celestial sphere in order to study point and extended sources of gamma-rays,
measure energy spectra of Galactic and extragalactic diffuse gamma-ray
emission, gamma-ray bursts, and gamma-ray emission from the Sun. GAMMA-400
covers the energy range from 100 MeV to ~3000 GeV. Its angular resolution is
~0.01 deg(Eg > 100 GeV), and the energy resolution ~1% (Eg > 10 GeV). GAMMA-400
is planned to be launched on the Russian space platform Navigator in 2019. The
GAMMA-400 perspectives in the search for dark matter in various scenarios are
presented in this paperComment: 4 pages, 4 figures, submitted to the Proceedings of the International
Cosmic-Ray Conference 2013, Brazil, Rio de Janeir
The GAMMA-400 space observatory: status and perspectives
The present design of the new space observatory GAMMA-400 is presented in
this paper. The instrument has been designed for the optimal detection of gamma
rays in a broad energy range (from ~100 MeV up to 3 TeV), with excellent
angular and energy resolution. The observatory will also allow precise and high
statistic studies of the electron component in the cosmic rays up to the multi
TeV region, as well as protons and nuclei spectra up to the knee region. The
GAMMA-400 observatory will allow to address a broad range of science topics,
like search for signatures of dark matter, studies of Galactic and
extragalactic gamma-ray sources, Galactic and extragalactic diffuse emission,
gamma-ray bursts and charged cosmic rays acceleration and diffusion mechanism
up to the knee
The GAMMA-400 gamma-ray telescope characteristics. Angular resolution and electrons/protons separation
The measurements of gamma-ray fluxes and cosmic-ray electrons and positrons
in the energy range from 100 MeV to several TeV, which will be implemented by
the specially designed GAMMA-400 gamma-ray telescope, concern with the
following broad range of science topics. Searching for signatures of dark
matter, surveying the celestial sphere in order to study gamma-ray point and
extended sources, measuring the energy spectra of Galactic and extragalactic
diffuse gamma-ray emission, studying gamma-ray bursts and gamma-ray emission
from the Sun, as well as high precision measuring spectra of high-energy
electrons and positrons, protons and nuclei up to the knee. To clarify these
scientific problems with the new experimental data the GAMMA-400 gamma-ray
telescope possesses unique physical characteristics comparing with previous and
present experiments. For gamma-ray energies more than 100 GeV GAMMA-400
provides the energy resolution of ~1% and angular resolution better than 0.02
deg. The methods developed to reconstruct the direction of incident gamma
photon are presented in this paper, as well as, the capability of the GAMMA-400
gamma-ray telescope to distinguish electrons and positrons from protons in
cosmic rays is investigated.Comment: 7 pages, 6 figures, submitted to Proceedings of Scienc
Principles of the nomenclature and classification of macromolecular organosilicon compounds
Polymerization of ethylene over a chromium oxide catalyst at at mospheric pressure in absence of solvent
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