ar X iv : a st ro - p h / 06 12 20 5 v 1 8 D ec 2 00 6 On the measurement of the proton - air cross section using longitudinal shower profiles

ar X iv : a st ro - p h / 06 12 37 8 v 1 1 4 D ec 2 00 6 Magnetic fields , strings and cosmology

ar X iv : a st ro - p h / 06 12 42 6 v 1 1 5 D ec 2 00 6 Heating and Cooling in the Perseus Cluster Core

ar X iv : a st ro - p h / 06 02 19 0 v 1 8 F eb 2 00 6 Impact of Uncertainties in Hadron Production on Air - Shower Predictions

Received XXX At high energy, cosmic rays can only be studied by measuring the extensive air showers they produce in the atmosphere of the Earth. Although the main features of air showers can be understood within a simple model of successive interactions, detailed simulations and a realistic description of particle production are needed to calculate observables relevant to air shower experiments...

ar X iv : a st ro - p h / 04 01 62 9 v 2 5 A pr 2 00 4 Primary Particle Type of the Most Energetic Fly ’ s Eye Air Shower

The longitudinal profile of the most energetic cosmic-ray air shower measured so far, the event recorded by the Fly’s Eye detector with a reconstructed primary energy of about 3.2 · 10 eV, is compared to simulated shower profiles. The calculations are performed with the CORSIKA code and include primary photons and different hadron primaries. For primary photons, preshower formation in the geoma...

ar X iv : a st ro - p h / 00 06 29 0 v 1 2 1 Ju n 20 00 Gas Rich Dwarfs from the PSS - II III . H I Profiles and Dynamical Masses

We present Arecibo neutral hydrogen data on a sample of optically selected dwarf galaxies.