Constraints on top-down models for the origin of UHECRs from the Pierre Auger Observatory data - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Conference Papers Year : 2008

Constraints on top-down models for the origin of UHECRs from the Pierre Auger Observatory data

D.V. Semikoz
  • Function : Author

Abstract

In the context of the report by the AGASA experiment of an apparent excess in the cosmic ray flux above the energy of the expected GZK feature, a variety of "top-down models" have been proposed for the origin of ultra-high-energy cosmic rays (UHECRs). These models involve the decay of supermassive particles and generically predict high neutrino and photon fluxes at ultra-high energy. Relying on the corresponding flux limits and overall spectrum normalisation obtained by the Pierre Auger Observatory, we set constraints on a wide class of top-down models and their contribution to the UHECR flux.

Dates and versions

in2p3-00169661 , version 1 (04-09-2007)

Identifiers

Cite

D.V. Semikoz. Constraints on top-down models for the origin of UHECRs from the Pierre Auger Observatory data. 30th International Cosmic Ray Conference - ICRC'07, Jul 2007, Merida, Mexico. pp.433-436. ⟨in2p3-00169661⟩
145 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More