scholarly journals Lorentz invariance violation in top-down scenarios of ultrahigh energy cosmic ray creation

2004 ◽  
Vol 69 (8) ◽  
Author(s):  
James R. Chisholm ◽  
Edward W. Kolb
Keyword(s):  
Lorentz Invariance ◽  
Cosmic Ray ◽  
Ultrahigh Energy ◽  
Top Down ◽  
Invariance Violation ◽  
Lorentz Invariance Violation

scholarly journals HIGH ENERGY ASTROPHYSICS TESTS OF LORENTZ INVARIANCE VIOLATION

2005 ◽  
Vol 20 (14) ◽  
pp. 3139-3142 ◽  
Author(s):  
F. W. STECKER
Keyword(s):  
Lorentz Invariance ◽  
High Energy ◽  
Ultrahigh Energy ◽  
Large Extra Dimension ◽  
Bl Lac Objects ◽  
Invariance Violation ◽  
Electron Positron ◽  
Lorentz Invariance Violation ◽  
Emission Models ◽  
Flux Level

Observations of the multi-TeV spectra of the Mkn 501 and other nearby BL Lac objects exhibit the high energy cutoffs predicted to be the result of intergalactic annihilation interactions, primarily with IR photons having a flux level as determined by various astronomical observations. After correcting for such intergalactic absorption, these spectra can be explained within the framework of synchrotron self-Compton emission models. Stecker and Glashow have shown that the existence of this annihilation via electron-positron pair production puts strong constraints on Lorentz invariance violaition. Such constraints have important implications for some quantum gravity and large extra dimension models. A much smaller amount of Lorentz invariance violation has potential implications for understanding the spectra of ultrahigh energy cosmic rays.

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