Global anisotropy of arrival directions of ultra-high-energy cosmic rays: capabilities of space-based detectors

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2008/03/003· OSTI ID:22137801

Kalashev, O E; Troitsky, S V ^[1]; Khrenov, B A; Klimov, P; Sharakin, S ^[2]

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1. Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary Prospect 7a, 117312, Moscow (Russian Federation)
2. D V Skobeltsin Institute of Nuclear Physics, M V Lomonosov Moscow State University, Moscow 119992 (Russian Federation)

Planned space-based ultra-high-energy cosmic-ray detectors (TUS, JEM-EUSO and S-EUSO) are best suited for searches of global anisotropies in the distribution of arrival directions of cosmic-ray particles because they will be able to observe the full sky with a single instrument. We calculate quantitatively the strength of anisotropies associated with two models of the origin of the highest-energy particles: the extragalactic model (sources follow the distribution of galaxies in the Universe) and the superheavy dark matter model (sources follow the distribution of dark matter in the Galactic halo). Based on the expected exposure of the experiments, we estimate the optimal strategy for efficient search of these effects.

• OSTI ID: 22137801
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2008, Issue 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANISOTROPY
COSMIC RADIATION
DISTRIBUTION
GALAXIES
NONLUMINOUS MATTER
RADIATION DETECTION
SKY
UNIVERSE