Transition from Galactic to extragalactic cosmic rays and cosmic ray anisotropy
نویسندگان
چکیده
منابع مشابه
Transition from galactic to extragalactic cosmic rays
The transition from galactic to extragalactic cosmic rays is discussed. One of critical indications for transition is given by the Standard Model of Galactic cosmic rays, according to which the maximum energy of acceleration for iron nuclei is of order of E Fe ≈ 1× 10 eV. At E > E Fe the spectrum is predicted to be very steep and thus the Standard Model favours the transition at energy not much...
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We discuss the region of transition between galactic and extragalactic cosmic rays. The exact shapes and compositions of these two components contains information about important parameters of powerful astrophysical sources and the conditions in extragalactic space. Several types of experimental data, including the exact shape of the ultrahigh energy cosmic rays, their chemical composition and ...
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The dip is a feature in the diffuse spectrum of UHE protons in energy range 1× 1018− 4× 10 eV, which is caused by electron-positron pair production on CMB photons. Calculated for power-law generation spectrum with index γg = 2.7, the shape of the dip is confirmed with high accuracy by data of Akeno AGASA, HiRes, Yakutsk and Fly’s Eye detectors. The predicted shape of the dip is robust: it is va...
متن کاملGalactic modulation of extragalactic cosmic rays: Possible origin of the knee in the cosmic ray spectrum
The existence of the spectral break around ∼ 3 × 10 eV in the cosmic ray spectrum (referred to as the ‘knee’) is one of the biggest questions in cosmic ray astrophysics. At the same time, the origin of cosmic rays above the knee energies (between 10 and 10 eV) is also still unsettled. In this paper, we investigate how the hypothetical extragalactic CRs after modulated by the galactic wind contr...
متن کاملDip in UHECR and Transition from Galactic to Extragalactic Cosmic Rays
The dip is a feature in the diffuse spectrum of UHE protons in energy range 1 × 10 − 4 × 10 eV, which is caused by electron-positron pair production on CMB photons. Calculated for power-law generation spectrum with index γg = 2.7, the shape of the dip is confirmed with high accuracy by data of Akeno AGASA, HiRes, Yakutsk and Fly’s Eye detectors. The predicted shape of the dip is robust: it is v...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2013
ISSN: 2100-014X
DOI: 10.1051/epjconf/20135306002