ar X iv : 0 90 2 . 32 72 v 1 [ as tr o - ph . C O ] 1 8 Fe b 20 09 Stochastic contribution to the growth factor in the Λ CDM model

ar X iv : 0 90 2 . 41 09 v 1 [ he p - ph ] 2 4 Fe b 20 09 pp̄ → Λ c Λ̄ c within a Handbag Picture – Cross

We study the process pp̄ → ΛcΛ̄c within the generalized parton picture. Our starting point is the double handbag diagram which factorizes into soft generalized parton distributions and a hard subprocess amplitude for uū → cc̄. Our cross-section predictions may become interesting in view of forthcoming experiments at FAIR in Darmstadt.

ar X iv : 0 90 2 . 32 39 v 1 [ m at h . D G ] 1 8 Fe b 20 09 Gauge theory in higher dimensions , II

ar X iv : 0 90 1 . 27 24 v 1 [ as tr o - ph . C O ] 1 8 Ja n 20 09 A Decade of Dark Energy : 1998 - 2008

The years 1998 to 2008 were very exciting years for cosmology. It was a pleasure to accept this invitation to describe my contributions to the development of our knowledge and understanding of the universe over the course of the past decade. Here, I begin by describing some of my work on radio galaxies as a modified standard yardstick and go on to describe modelindependent studies of the accele...

ar X iv : 0 90 2 . 31 29 v 1 [ as tr o - ph . H E ] 1 8 Fe b 20 09 What can Simbol - X do for gamma - ray binaries ?

Gamma-ray binaries have been uncovered as a new class of Galactic objects in the very high energy sky (> 100 GeV). The three systems known today have hard X-ray spectra (photon index ∼1.5), extended radio emission and a high luminosity in gamma-rays. Recent monitoring campaigns of LSI +61o303 in X-rays have confirmed variability in these systems and revealed a spectral hardening with increasing...

ar X iv : 0 81 0 . 33 37 v 2 [ as tr o - ph ] 1 6 Fe b 20 09 Inflationary Potential from 21 cm Tomography and Planck

Three-dimensional neutral hydrogen mapping using the redshifted 21 cm line has recently emerged as a promising cosmological probe. Within the framework of slow-roll reconstruction, we analyze how well the inflationary potential can be reconstructed by combining data from 21 cm experiments and cosmic microwave background data from the Planck satellite. We consider inflationary models classified ...