ar X iv : a st ro - p h / 99 06 50 0 v 1 3 0 Ju n 19 99 Turbulent Particle Acceleration in the Diffuse Cluster Plasma

ar X iv : a st ro - p h / 99 06 25 1 v 1 1 5 Ju n 19 99 Inflow and outflows in NGC 2992 / 3

We present observational evidences for inflow and outflows in the interacting system Arp 245 (NGC 2992/3).

ar X iv : a st ro - p h / 99 06 24 1 v 1 1 4 Ju n 19 99 Evidence Against the Sciama Model of Radiative Decay of Massive Neutrinos

We report on spectral observations of the night sky in the band around 900 Å where the emission line in the Sciama model of radiatively decaying massive neutrinos would be present. The data were obtained with a high resolution, high sensitivity spectrometer flown on the Spanish MINISAT satellite. The observed emission is far less intense than that expected in the Sciama model. Subject headings:...

ar X iv : a st ro - p h / 99 06 11 4 v 1 7 J un 1 99 9 OG 3 . 3 . 20 1 Ion injection and acceleration at modified shocks

The theory of diffusive particle acceleration explains the spectral properties of the cosmic rays below energies of ≃ 10 eV as produced at strong shocks in supernova remnants (SNR’s). To supply the observed flux of cosmic rays, a significant fraction of the energy released by a supernova has to be transfered to cosmic rays. The key to the question of the efficiency of SNR’s in producing cosmic ...

ar X iv : h ep - p h / 99 06 39 0 v 1 1 6 Ju n 19 99 DENSITY CORRELATORS IN A SELF - SIMILAR CASCADE

Multivariate density moments (correlators) of arbitrary order are obtained for the multi-plicative self-similar cascade. This result is based on the calculation by Greiner, Eggers and Lipa (reference [1]) where the correlators of the logarithms of the particle densities have been obtained. The density correlators, more suitable for comparison with multiparticle data, appear to have even simpler...

ar X iv : a st ro - p h / 95 06 06 0 v 1 8 J un 1 99 5 The Physics of Core - Collapse Supernova Explosions a