88 citations · 167 across the 9 of their papers we have counts for
15 papers · 1 filter
Observational Evidence for Extra Dimensions from Dark Matter
Bo Qin, Ue-Li Pen, Joseph Silk
Recent astronomical observations of systems of dark matter, which have been cited as providing possible support for self-interacting cold dark matter, may provide evidence for the…
Ionization fronts and their interaction with density fluctuations: implications for reionization
Ilian T. Iliev, Paul R. Shapiro, Evan Scannapieco +4
The propagation of cosmological ionization fronts (I-fronts) during reionization is strongly influenced by small-scale structure. Here we summarize our recent attemps to understand…
Searching for Early Ionization with the Primeval Structure Telescope
Jeff Peterson, Ue-Li Pen, Xiang-Ping Wu
The Primeval Structure Telescope (PaST), will be used search for and study the era the of the first luminous objects, the epoch of reionization. The first stars ionized the gas aro…
Out-of-Core Hydrodynamic Simulations for Cosmological Applications
Hy Trac, Ue-Li Pen
We present an out-of-core hydrodynamic code for high resolution cosmological simulations that require terabytes of memory. Out-of-core computation refers to the technique of using…
Towards optimal parallel PM N-body codes: PMFAST
Hugh Merz, Ue-Li Pen, Hy Trac
We present a new parallel PM N-body code named PMFAST that is freely available to the public. PMFAST is based on a two-level mesh gravity solver where the gravitational forces are…
High Performance Commodity Networking in a 512-CPU Teraflop Beowulf Cluster for Computational Astrophysics
John Dubinski, Robin Humble, Ue-Li Pen +2
We describe a new 512-CPU Beowulf cluster with Teraflop performance dedicated to problems in computational astrophysics. The cluster incorporates a cubic network topology based on…