ar X iv : a st ro - p h / 99 02 26 6 v 1 1 8 Fe b 19 99 High Energy Cosmic Rays from Neutrinos

ar X iv : a st ro - p h / 99 02 26 6 v 2 3 A pr 2 00 0 High Energy Cosmic Rays from Neutrinos

We address a class of models in which neutrinos, having a small mass, originate the highest energy cosmic rays interacting with the relic cosmic neutrino background. Assuming lepton number symmetry and an enhanced neutrino

ar X iv : a st ro - p h / 99 04 21 3 v 1 1 6 A pr 1 99 9 High Energy Cosmic Neutrinos Astronomy : The ANTARES Project ‡

Neutrinos may offer a unique opportunity to explore the far Universe at high energy. The ANTARES collaboration aims at building a large undersea neutrino detector able to observe astrophysical sources (AGNs, X-ray binary systems, ...) and to study particle physics topics (neutrino oscillation, ...). After a description of the research opportunities of such a detector, a status report of the exp...

ar X iv : a st ro - p h / 99 02 23 4 v 2 1 7 Fe b 19 99 OB ASSOCIATIONS

ar X iv : a st ro - p h / 99 02 15 2 v 1 1 0 Fe b 19 99 POWER SPECTRUM FROM WEAK - SHEAR DATA

We demonstrate that the aperture mass as a measure for cosmic shear closely approximates (to better than ≈ 5%) the scaled and shifted power spectrum of the projected mass density. This cosmological weak-lensing information can thus be used to directly infer the projected matter power spectrum with high accuracy. As an application, we show that aperture-mass observations can be used to constrain...

ar X iv : a st ro - p h / 99 02 30 1 v 1 2 0 Fe b 19 99 On the Stability of the CMB Autocorrelation Function on Cosmological Parameters

The properties of the Cosmic Microwave Background Radiation angular autocorrelation function in Friedman Universe with negative curvature (k = −1) are studied. The dependence of the spectral index of autocorrelation function on the density parameter of the Universe is studied numerically, taking into account the effect of geodesic mixing, occuring in k = −1 curvature Universes.