scholarly journals Precision measurements of the properties of cosmic rays at the highest energies

2019 ◽  
Vol 216 ◽  
pp. 01010
Author(s):  
Jörg R. Hörandel

The Pierre Auger observatory is presently being upgraded to enlarge its detection capabilities for ultra-high-energy cosmic rays. Part of this upgrade is a radio detector array, aimed to cover a surface area of 3000 km2 to measure the properties of the highestenergy cosmic rays. The plans for this radio upgrade are outlined.

2019 ◽  
Vol 210 ◽  
pp. 06005 ◽  
Author(s):  
Jörg R. Hörandel ◽  

The Pierre Auger Observatory is presently being upgraded to enlarge its detection capabilities for ultra-high-energy cosmic rays. Part of this upgrade is a radio detector array, aimed to cover a surface area of 3000 km2 to measure the properties of the highest-energy cosmic rays. The plans for this radio upgrade are outlined


2011 ◽  
Vol 20 (supp02) ◽  
pp. 50-56
Author(s):  
◽  
PETER SCHIFFER

The Pierre Auger Observatory is the world's largest experiment for the measurement of ultra-high energy cosmic rays (UHECRs). These UHECRs are assumed to be to be charged particles, and thus are deflected in cosmic magnetic fields. Recent results of the Pierre Auger Observatory addressing the complex of energy ordering of the UHECRs arrival directions are reviewed in this contribution. So far no significant energy ordering has been observed.


2012 ◽  
Vol 18 ◽  
pp. 221-229
Author(s):  
◽  
J. R. T. DE MELLO NETO

We present the status and the recent measurements from the Pierre Auger Observatory. The energy spectrum is described and its features discussed. We report searches for anisotropy of cosmic rays arrival directions in large scales and through correlation with catalogues of celestial objects. The measurement of the cross section proton-air is discussed. Finally, the mass composition is addressed with the measurements of the variation of the depth of shower maximum with energy and with the muon density at ground.


2013 ◽  
Vol 28 (18) ◽  
pp. 1350075
Author(s):  
HANG BAE KIM

We study the anisotropy in the arrival directions of Pierre Auger Observatory (PAO) ultra-high-energy cosmic rays (UHECRs), using the point source correlational angular distance distribution (CADD). The result shows that the anisotropy is characterized by one prominent excess region and one void region. The excess region is located near the Centaurus A direction, supporting that the Centaurus A is a promising UHECR source. The void region near the south pole direction may be used to limit the diffuse isotropic background contribution.


2019 ◽  
Vol 64 (7) ◽  
pp. 646
Author(s):  
I. Valiño

We highlight the main results obtained by the Pierre Auger Collaboration in its quest to unveil the mysteries associated with the nature and origin of the ultra-high energy cosmic rays, the highest-energy particles in the Universe. The observatory has steadily produced high-quality data for more than 15 years, which have already led to a number of major breakthroughs in the field contributing to the advance of our understanding of these extremely energetic particles. The interpretation of our measurements so far opens new questions which will be addressed by the on-going upgrade of the Pierre Auger Observatory.


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