scholarly journals Luminosity of ultrahigh energy cosmic rays and bounds on magnetic luminosity of radio-loud active galactic nuclei

2015 ◽  
Vol 92 (10) ◽  
Author(s):  
C. H. Coimbra-Araújo ◽  
R. C. Anjos
2010 ◽  
Vol 719 (1) ◽  
pp. 459-468 ◽  
Author(s):  
Yun-Ying Jiang ◽  
L. G. Hou ◽  
J. L. Han ◽  
X. H. Sun ◽  
Wei Wang

2020 ◽  
Vol 29 (1) ◽  
pp. 40-46
Author(s):  
Dmitri L. Khokhlov

AbstractThe studied conjecture is that ultra high energy cosmic rays (UHECRs) are hypothetical Planck neutrinos arising in the decay of the protons falling onto the gravastar. The proton is assumed to decay at the Planck scale into positron and four Planck neutrinos. The supermassive black holes inside active galactic nuclei, while interpreted as gravastars, are considered as UHECR sources. The scattering of the Planck neutrinos by the proton at the Planck scale is considered. The Planck neutrinos contribution to the CR events may explain the CR spectrum from 5 × 1018 eV to 1020 eV. The muon number in the Planck neutrinos-initiated shower is estimated to be larger by a factor of 3/2 in comparison with the standard model that is consistent with the observational data.


1998 ◽  
Vol 57 (8) ◽  
pp. 4606-4613 ◽  
Author(s):  
Daniel J. H. Chung ◽  
Glennys R. Farrar ◽  
Edward W. Kolb

2010 ◽  
Vol 722 (1) ◽  
pp. 281-288 ◽  
Author(s):  
Rodrigo S. Nemmen ◽  
Charles Bonatto ◽  
Thaisa Storchi-Bergmann

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