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58 papers · 1 filter
Search for Point Sources of Ultra-High Energy Cosmic Rays Above 40 EeV Using a Maximum Likelihood Ratio Test
s Eye Collaboration, G. R. Farrar
We present the results of a search for cosmic ray point sources at energies above 40 EeV in the combined data sets recorded by the AGASA and HiRes stereo experiments. The analysis…
Discovery of a Large Scale Clumpy Structure around the Lynx Supercluster at z~1.27
Fumiaki Nakata, Tadayuki Kodama, Kazuhiro Shimasaku +12
We report the discovery of a probable large scale structure composed of many galaxy clumps around the known twin clusters at z=1.26 and z=1.27 in the Lynx region. Our analysis is b…
Observation results by the TAMA300 detector on gravitational wave bursts from stellar-core collapses
Masaki Ando, Koji Arai, Youichi Aso +19
We present data-analysis schemes and results of observations with the TAMA300 gravitational-wave detector, targeting burst signals from stellar-core collapse events. In analyses fo…
The Environmental Dependence of Galaxy Properties in the Local Universe: Dependence on Luminosity, Local Density, and System Richness
Masayuki Tanaka, Tomotsugu Goto, Sadanori Okamura +2
We investigate the environmental dependence of star formation and the morphology of galaxies in the local universe based on a volume-limited sample (0.030<z<0.065 and M_r<M_r^*+2)…
Evidence for muon neutrino oscillation in an accelerator-based experiment
K2K Collaboration, E. Aliu
We present results for muon neutrino oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced muon neutrino beam with…
Hadronic decay of the gravitino in the early universe and its implications to inflation
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi
We discuss the effects of the gravitino on the big-bang nucleosynthesis (BBN), paying particular attention to the hadronic decay mode of the gravitino. We will see that the hadroni…