Possible galactic sources of ultrahigh-energy cosmic rays and a strategy for their detection via gravitational lensing

Details Possible galactic sources of ultrahigh-energy cosmic rays and a strategy for their detection via gravitational lensing Possible galactic sources of ultrahigh-energy cosmic rays and a strategy for their detection via gravitational lensing

2000-12-04

arxiv.org/abs/astro-ph/0012040v2

Pisma Zh.Eksp.Teor.Fiz. 73 (2001) 503; JETP Lett. 73 (2001) 443-445

Astronomy and Astrophysics

Astrophysics

3 pages, one figure; references added

Scientific paper

10.1134/1.1385653

If decays of superheavy relic particles in the galactic halo are responsible for ultrahigh-energy cosmic rays, these particles must be clustered to account for small-scale anisotropy in the AGASA data. We show that the masses of such clusters are large enough for them to gravitationally lens stars and galaxies in the background. We propose a general strategy that can be used to detect such clusters via gravitational lensing, or to rule out the hypothesis of decaying relic particles as the origin of highest-energy cosmic rays.

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