Halo dark matter and ultrahigh-energy cosmic rays - INSPIRE

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Halo dark matter and ultrahigh-energy cosmic rays

Pasquale Blasi
(
- Fermilab
)
,
Ravi K. Sheth
(
- Fermilab
)

Jun, 2000

9 pages

Published in:

Phys.Lett.B 486 (2000) 233-238

e-Print:

astro-ph/0006316 [astro-ph]

DOI:

10.1016/S0370-2693(00)00784-X

Report number:

FERMILAB-PUB-00-143-A

View in:

ADS Abstract Service

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Abstract: (Elsevier)

The decay of very heavy metastable relics of the Early Universe can produce ultra-high energy cosmic rays (UHECRs) in the halo of our own Galaxy. On distance scales of the order of the halo size, energy losses are negligible – no Greisen–Zatsepin–Kuzmin cutoff is expected. In this letter we show that, as a consequence of the hierarchical build up of the halo, this scenario predicts the existence of small scale anisotropies in the arrival directions of UHECRs. We also suggest some consequences of this scenario which will be testable with upcoming experiments, as Auger.

dark matter
galaxy
postulated particle: heavy
postulated particle: decay
cosmic radiation: production
cosmic radiation: flux
cosmic radiation: spectrum
cosmic radiation: anisotropy
numerical calculations

References(19)

Figures(0)

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