The High Resolution Fly's Eye - Status and Preliminary Results on Cosmic Ray Composition Above 1018eV

Author(s):  
Pierre Sokolsky
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.


2008 ◽  
Vol 23 (17n20) ◽  
pp. 1290-1300 ◽  
Author(s):  
PIERRE SOKOLSKY

Results from the High Resolution Fly's Eye (HiRes) experiment and the Pierre Auger Observatory (PAO) on the observation of the Greissen-Zatsepin-Kuzmin cutoff in the cosmic ray spectrum are presented. Both experiments observe a cutoff consistent with the GZK predictions with a five and six sigma significance respectively. The nature of the cosmic ray composition near the GZK cutoff is discussed as well as the recent claim of a correlation of the highest energy cosmic rays with AGNs in the Southern sky.


1998 ◽  
Vol 15 (3) ◽  
pp. 332-335 ◽  
Author(s):  
R. W. Clay ◽  
N. R. Wild ◽  
D. J. Bird ◽  
B. R. Dawson ◽  
M. Johnston ◽  
...  

AbstractA cloud monitor has been developed for use with cosmic ray air shower fluorescence detectors, the High Resolution Fly's Eye and the Pierre Auger Observatory. This is based on an infrared thermopile device which, unlike previous such monitors, requires no moving chopper and is suitable for unattended operation over long periods of time.


2011 ◽  
Vol 7 (S283) ◽  
pp. 458-459
Author(s):  
Jun-ichi Nakashima ◽  
Sun Kwok ◽  
Bosco H. K. Yung ◽  
Yong Zhang ◽  
Nico Koning ◽  
...  

AbstractWe obtained a high-resolution CO map of IRAS 22272+5435 in the CO J = 2–1 line using CARMA. The target exhibits a second biggest angular size of the circumstellar molecular envelope among known 21 μm sources. In the preliminary results, we found that the CO properties of IRAS 22272+5435 is clearly different from those of IRAS 07134+1005, which is another well-investigated 21 μm source. For example, elongations seen in the mid-infrared and CO images are extended in mutually perpendicular directions, although in case of IRAS 07134+1005 the CO feature coincides well with the mid-infrared structure.


1971 ◽  
Vol 1 (4) ◽  
pp. 466-473 ◽  
Author(s):  
B. R. Bean ◽  
R. E. McGavin ◽  
R. B. Chadwick ◽  
B. D. Warner

1986 ◽  
Vol 48 (11-12) ◽  
pp. 1269-1278 ◽  
Author(s):  
Shoichiro Fukao ◽  
Toru Sato ◽  
Toshitaka Tsuda ◽  
Mamoru Yamamoto ◽  
Susumu Kato

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