The Source Energy Spectrum of Cosmic Rays

2002 ◽  
Vol 19 (2) ◽  
pp. 228-232 ◽  
Author(s):  
R. W. Clay
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
Energy Range ◽  
Power Law ◽  
Lower Energy ◽  
Full Range ◽  
Source Spectrum ◽  
Common Source ◽  
Propagation Effects ◽  
The Relationship

AbstractAn examination is made of the relationship between the observed energy spectrum of cosmic rays and the averaged spectrum of the cosmic rays at their sources. These spectra differ greatly, due to propagation effects. A form of the source spectrum is deduced which is a rather featureless power law over the full range of observations from 1010 eV to 1020 eV. We suggest that this lack of features is indicative of a common source for all cosmic rays over the full energy range, as opposed to lower energy Galactic and higher energy intergalactic components such as is often suggested.

Electron component in primary cosmic rays. I. Experiment

1968 ◽  
Vol 46 (10) ◽  
pp. S530-S532 ◽  
Author(s):  
A. Danjo ◽  
S. Hayakawa ◽  
F. Makino ◽  
Y. Tanaka
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
Energy Range ◽  
Power Law ◽  
Differential Spectrum ◽  
Cutoff Rigidity ◽  
Electron Component ◽  
Geomagnetic Cutoff Rigidity ◽  
Geomagnetic Cutoff ◽  
Primary Cosmic Rays

The energy spectrum of electrons in the primary cosmic rays was measured at a location where the vertical geomagnetic cutoff rigidity is 11.5 GV, using a balloon-borne counter system. The differential spectrum was determined in the energy range from 13 to 50 GeV and is represented by a power law with exponent −2.4 ± 0.6. This result is consistent with a spectrum extending smoothly from lower energies with the same slope.

scholarly journals Investigation of the energy spectrum and chemical composition of primary cosmic rays in 1–100 PeV energy range with a UAV-borne detector

2020 ◽  
Vol 15 (09) ◽  
pp. C09061-C09061
Author(s):  
D. Chernov ◽  
E. Bonvech ◽  
M. Finger Jr. ◽  
M. Finger ◽  
V. Galkin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Energy Spectrum ◽  
Cosmic Rays ◽  
Energy Range ◽  
Primary Cosmic Rays

scholarly journals Cosmic Ray Energy Spectrum derived from the Data of EAS Cherenkov Light Arrays in the Tunka Valley

2019 ◽  
Vol 210 ◽  
pp. 01003
Author(s):  
V. Prosin ◽  
I. Astapov ◽  
P. Bezyazeekov ◽  
A. Borodin ◽  
M. Brückner ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
Energy Range ◽  
Cosmic Ray ◽  
Cherenkov Light ◽  
Differential Energy Spectrum ◽  
Extensive Air Shower ◽  
Air Shower

The extensive air shower Cherenkov light array Tunka-133 collected data during 7 winter seasons from 2009 to 2017. From 2175 hours of data taking, we derived the differential energy spectrum of cosmic rays in the energy range 6 · 1015 2 · 1018 eV. The TAIGA-HiSCORE array is in the process of continuous expansion and modernization. Here we present the results obtained with 28 stations of the first HiSCORE stage from 35 clear moonless nights in the winter of 2017-2018. The combined spectrum of two arrays covers a range of 2 · 1014 – 2 · 1018 eV.

A FRACTAL-DISCRETE SCHEME FOR COSMIC PARTICLE ACCELERATION

2007 ◽  
Vol 16 (02n03) ◽  
pp. 521-526
Author(s):  
A. L. DOS SANTOS ◽  
L. P. L. DE OLIVEIRA ◽  
B. E. J. BODMANN ◽  
M. T. VILHENA
Keyword(s):  
Particle Acceleration ◽  
Energy Spectrum ◽  
Energy Range ◽  
Power Law ◽  
Cosmic Ray ◽  
High Energy ◽  
Cosmic Particle ◽  
Observational Fact ◽  
Very High Energy ◽  
Very High

The present article is an attempt to provide a parametrization for particle acceleration probabilities in the very high energy range combining a discrete fractal scheme for interaction probabilities and the observational fact of a power law energy spectrum for cosmic ray particles.

The study of primary cosmic rays energy spectrum and mass composition in the energy range 0.5 – 50 PeV with TUNKA Eas Cherenkov array

1999 ◽  
Vol 75 (1-2) ◽  
pp. 299-301 ◽  
Author(s):  
O.A. Gress ◽  
T.I. Gress ◽  
E.E. Korosteleva ◽  
L.A. Kuzmichev ◽  
B.K. Lubsandorzhiev ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
Energy Range ◽  
Mass Composition ◽  
Primary Cosmic Rays

scholarly journals Limits on Source Distances for the Most Energetic Cosmic Rays

1997 ◽  
Vol 14 (3) ◽  
pp. 258-264 ◽  
Author(s):  
R. Lampard ◽  
R. W. Clay ◽  
B. R. Dawson
Keyword(s):  
Cosmic Rays ◽  
Energy Loss ◽  
Power Law ◽  
Pion Production ◽  
Cosmic Ray ◽  
Source Spectrum ◽  
Energy Losses ◽  
Microwave Background ◽  
Energy Degradation

AbstractThe propagation of the highest energy cosmic rays through the 2·7 K microwave background is considered. Photo-pion production interactions cause energy losses for primary cosmic ray protons which result in significant energy degradation over intergalactic distances. The process of energy loss is discussed and an estimate is made of the average distances travelled for observed cosmic rays with a range of energies, assuming a power law source spectrum. At energies over 1020 eV, the average distances travelled are a few tens of megaparsecs, limiting possible sources to the volume dominated by the supergalactic plane.

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