Cosmic protons
نویسندگان
چکیده
منابع مشابه
Ultra High Energy Cosmic Ray Protons: Signatures and Observations
The status of the Greisen-Zatsepin-Kuzmin (GZK) cutoff and pair-production dip in Ultra High Energy Cosmic Rays (UHECR) is discussed. They are the features in the spectrum of protons propagating through CMB radiation in extragalactic space, and discovery of these features implies that primary particles are mostly extragalactic protons. The spectra measured by AGASA, Yakutsk, HiRes and Auger det...
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If ultrahigh energy cosmic rays (UHECRs) originate from extragalactic sources, understanding the propagation of the charged particles through the magnetized large scale structure (LSS) of the universe is crucial in the search for astrophysical accelerators. Based on a novel model of turbulence dynamo, we estimate the intergalactic magnetic fields (IGMFs) in cosmological simulations for the form...
متن کاملCosmic Ray Protons Accelerated at Cosmological Shocks and Their Impact on Groups and Clusters of Galaxies
We investigate the production of cosmic ray (CR) protons at cosmological shocks by performing, for the first time, numerical simulations of large scale structure formation that include directly the acceleration, transport and energy losses of the high energy particles. CRs are injected at shocks according to the thermal leakage model and, thereafter, accelerated to a power-law distribution as i...
متن کاملPropagation of Ultra-High-Energy Protons through the Magnetized Cosmic Web
If ultra-high-energy cosmic rays (UHECRs) originate from extragalactic sources, understanding the propagation of charged particles through the magnetized large scale structure (LSS) of the universe is crucial in the search for the astrophysical accelerators. Based on a novel model of the turbulence dynamo, we estimate the intergalactic magnetic fields (IGMFs) in cosmological simulations of the ...
متن کاملLimits on Neutron Lorentz Violation from the Stability of Primary Cosmic Ray Protons
Recent evidence appears to confirm that the ultra-high-energy primary cosmic ray spectrum consists mostly of protons. The fact that these protons can traverse large distances to reach Earth allows us to place bounds on Lorentz violations. The protons neither emit vacuum Cerenkov radiation nor β-decay into neutrons, and this constrains five previously unmeasured coefficients in the neutron secto...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2000
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(00)00970-9