scholarly journals Reconciling the light component and all-particle cosmic ray energy spectra at the knee

2015 ◽  
Vol 39 (12) ◽  
pp. 125001 ◽  
Author(s):  
Yi Zhao ◽  
Huan-Yu Jia ◽  
Feng-Rong Zhu
2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1019-1021
Author(s):  
JOHN BELZ

The High-Resolution Fly's Eye cosmic ray observatory has been operating in monocular (stereo) mode for about three years (one year), during which time we have observed extensive airshowers with an integrated aperture of ~ 1500 km2-sr-yr (~ 400 km-sr-yr) at 5×1019 eV. We describe the HiRes experiment and the nitrogen fluorescence technique, and present data taken in both monocular and stereo modes including preliminary energy spectra.


1963 ◽  
Vol 11 (2) ◽  
pp. 193-208
Author(s):  
L.V. Kurnosova ◽  
V.I. Logachev ◽  
L.A. Razorenov ◽  
M.I. Fradkin

2011 ◽  
Vol 742 (1) ◽  
pp. 14 ◽  
Author(s):  
A. Obermeier ◽  
M. Ave ◽  
P. Boyle ◽  
Ch. Höppner ◽  
J. Hörandel ◽  
...  
Keyword(s):  

2011 ◽  
Vol 28 (9) ◽  
pp. 094005 ◽  
Author(s):  
C Grimani ◽  
H M Araújo ◽  
M Fabi ◽  
A Lobo ◽  
I Mateos ◽  
...  

Recent experiments have extended the knowledge of the flux and energy spectra of individual cosmic-ray components to much higher energies than had previously been accessible. Both electron and nuclear components show a behaviour at high energy which is unexpected, and which carries information regarding the sources and the propagation of particles between sources and observer. Electromagnetic interactions which are suffered by the electrons in interstellar space should steepen their spectrum, a steepening that would reveal the average lifetime a cosmic-ray particle spends in the galaxy. Measurements up to 1000 GeV show no such steepening. It was discovered that the composition of the nuclear species which is now measured up to 100 GeV/nucleon changes with energy. This change indicates traversal of less interstellar matter by the high energy particles than by those of lower energy. We discuss the experimental evidence and its implication.


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