Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-09-29
Astronomy and Astrophysics
Astrophysics
Scientific paper
A prediction of standard Big Bang cosmology is that the observed UHECR (ultra-high-energy cosmic rays) spectrum will exhibit a cutoff at the GKZ limit, resulting from interaction with the photons that constitute the cosmic microwave background. We show that for the Quasi-Static Universe (QSU) model, in which photon energy is an invariant in the cosmological reference frame, the photon number density in the universe today is a factor of 10^9 less than in the standard model. As a consequence, the mean free path of UHECRs will exceed the horizon distance of the universe, rendering it essentially transparent to UHECRs. The QSU model therefore predicts that no cutoff will be observed in the UHECR spectrum.
No associations
LandOfFree
Reassessment of the GZK cutoff in the spectrum of UHE cosmic rays in a universe with low photon-baryon ratio does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Reassessment of the GZK cutoff in the spectrum of UHE cosmic rays in a universe with low photon-baryon ratio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reassessment of the GZK cutoff in the spectrum of UHE cosmic rays in a universe with low photon-baryon ratio will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-279407