ИКФИА + ИЯИ: Глушков и др. 2008
Смешанный состав КЛ при Е > 2∙1019 эВ
CRs from SNRs +
CRs from AGNs
Yakutsk
CRs from SNRs +
reacceleration +
Extragalactic CRs
GZK cutoff
p + γ → N + π
Experiment:
Akeno-AGASA
(Takeda et al. 2003)
HiRes
(Abbasi et al. 2005)
Yakutsk
(Egorova et al. 2004)
Berezhko (2009, ApJL)
Present
Planned
Modernization of Yakutsk EAS array (2007-2011)
Supplement by new detectors:
differential Cherenkov light detectors to study Cosmic Ray composition
Theory provides detail prediction of the properties of CRs and
associated emission, produced in SNRs
εmax ~ Z
Amplified magnetic field
Bd2/(8π) ≈ 10-2ρ0VS2
Bd >> BISM
knee
Galactic CRs
(from SNRs + reacceleration)
+ extragalactic CRs
Galactic CRs
Extragalactic
CRs
Galactic CRs
Extragalactic CRs
Precise measurement of CR spectrum
and composition at 1017-1019 eV is needed
to find transition region between galactic and
extragalactic CR components
p + γ → N + π
CRs from extragalactic sources
Ivanov(2008)
CRs from AGN directions
(within 3о)
Dip scenario
Dip
p + γ → p + e+ + e-
GZK cutoff
p + γ → N + π
Experiment:
Akeno-AGASA
(Takeda et al. 2003)
HiRes
(Abbasi et al. 2005)
Yakutsk
(Egorova et al. 2004)
Berezhko & Völk (2007)
Ankle scenario
CRs from SNRs +
CRs from AGNs
CRs from SNRs +
reacceleration +
Extragalactic CRs
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