Dr
Beatrice Panico
(Universita' Roma Tor Vergata - INFN Roma Tor Vergata)
25/05/2011, 14:30
The ARGO-YBJ experiment, located at Yangbajing Cosmic Ray Laboratory (Tibet, 4300 m a.s.l., 606 g/cm^2 ) has an high segmentation that allows the detection of air showers with greater granularity and lower energy threshold than other EAS-arrays. The spectrum of the primary Cosmic Rays light (p+He) component in the energy range ~10 - 100 TeV is measured selecting vertical showers with the...
Dr
Roberto Iuppa
(INFN - sez.ne Tor Vergata, Universita' Tor Vergata)
25/05/2011, 14:50
The ARGO-YBJ experiment, located at the Yangbajing Cosmic Ray Laboratory (Tibet, 4300 m asl, 606 g/cm2), is an EAS-array exploiting the full coverage approach at high altitude. We analyzed the data taken since November 2007 looking for anisotropies in the arrival directions of cosmic rays on different angular scales. The results of the analysis is reported and compared with other experiments.
Dr
Simona Toscano
(UW-Madison)
25/05/2011, 15:10
The IceCube neutrino detector, buried under the South Pole ice, has been completed in December 2010 with all 86 strings deployed. Between May 2009 and May 2010 the detector, operating in a smaller configuration with only 59 strings, has recorded 32 billion muons produced in cosmic ray-induced air showers, with energies above 10 TeV. With this large number of events we can, for the very first...
Prof.
Domenico Marinucci
(Universita' Tor Vergata - Dipartimento di Matematica)
25/05/2011, 15:30
The ARGO-YBJ experiment, located at the Yangbajing Cosmic Ray Laboratory (Tibet, 4300 m asl, 606 g/cm2), is an EAS-array exploiting the full coverage approach at high altitude. The large field of view (~ 2 sr) and the low energy threshold (few hundreds of GeV) result in a trigger rate of ~ 3.6 kHz and ~ 10^{11} EAS collected per year. Such a dataset contains signals laying on different angular...
Prof.
Daniele Fargion
(ROMA1)
25/05/2011, 15:50
At tens EeV UHECR in AUGER show a composition linked to nuclei. At same energy UHECR showers in Hires seem to point to nucleon (or light nuclei). We found that lightest nuclei as He UHECR may solve at once both experiment composition signals as well as the spread around Cen-A of more than a dozen of events and the absence of Virgo cluster traces. The consequences maybe a diluted and...
