ar X iv : a st ro - p h / 01 10 60 4 v 1 2 9 O ct 2 00 1 Detecting filaments at z ≈ 3 Johan

ar X iv : a st ro - p h / 01 10 21 1 v 1 9 O ct 2 00 1 Quintessence – the Dark Energy in the Universe ?

Quintessence – the energy density of a slowly evolving scalar field – may constitute a dynamical form of the homogeneous dark energy in the universe. We review the basic idea and indicate observational tests which may distinguish quintessence from a cosmological constant.

ar X iv : a st ro - p h / 06 10 24 6 v 1 9 O ct 2 00 6 Special Features of Galactic Dynamics

ar X iv : a st ro - p h / 06 07 53 9 v 1 2 4 Ju l 2 00 6 CLUSTERS AND THE COSMIC WEB : Identifying the location of filaments

ar X iv : a st ro - p h / 00 10 46 8 v 1 2 4 O ct 2 00 0 In the Beginning : The First Sources of Light and the Reionization of the Universe

The formation of the first stars and quasars marks the transformation of the universe from its smooth initial state to its clumpy current state. In popular cosmological models, the first sources of light began to form at a redshift z = 30 and reionized most of the hydrogen in the universe by z = 7. Current observations are at the threshold of probing the hydrogen reionization epoch. The study o...

ar X iv : a st ro - p h / 06 10 95 0 v 1 3 1 O ct 2 00 6 Formation of cold molecular filaments in cooling flow clusters

New CO observations at the center of cooling flow in Perseus cluster [4] show a clear correlation of the molecular gas with the previously detected H-α filaments [1]. In this poster, we present high resolution multi-phase simulations of the Perseus Cluster, taking into account the AGN feedback in form of hot buoyant bubbles. These simulations show that significant amount of gas can cool far fro...