
New Astronomy 15(7):581 (2010)
We describe an implementation of compressible inviscid fluid solvers with blockstructured adaptive mesh refinement on Graphics Processing Units using NVIDIA’s CUDA. We show that a class of high resolution shock capturing schemes can be mapped naturally on this architecture. Using the metho... 
New Astronomy 15(7):581 (2010)
We describe an implementation of compressible inviscid fluid solvers with blockstructured adaptive mesh refinement on Graphics Processing Units using NVIDIA’s CUDA. We show that a class of high resolution shock capturing schemes can be mapped naturally on this architecture. Using the metho... 
Science 325(5940):601 (2009) PMID 19589964
Previous highresolution cosmological simulations predicted that the first stars to appear in the early universe were very massive and formed in isolation. Here, we discuss a cosmological simulation in which the central 50 M(o) (where M(o) is the mass of the Sun) clump breaks up into two cores h... 
Science 325(5940):601 (2009) PMID 19589964
Previous highresolution cosmological simulations predicted that the first stars to appear in the early universe were very massive and formed in isolation. Here, we discuss a cosmological simulation in which the central 50 M(o) (where M(o) is the mass of the Sun) clump breaks up into two cores h... 
Science 295(5552):93 (2002) PMID 11711636
We describe results from a fully selfconsistent threedimensional hydrodynamical simulation of the formation of one of the first stars in the Universe. In current models of structure formation, dark matter initially dominates, and pregalactic objects form because of gravitational instability fr... 
Science 295(5552):93 (2002) PMID 11711636
We describe results from a fully selfconsistent threedimensional hydrodynamical simulation of the formation of one of the first stars in the Universe. In current models of structure formation, dark matter initially dominates, and pregalactic objects form because of gravitational instability fr... 
We present a new approach to numerically model continuum radiative transfer based on the Optically Thin Variable Eddington Tensor (OTVET) approximation. Our method insures the exact conservation of the photon number and flux (in the explicit formulation) and automatically switches from the ...

We have reviewed the chemistry and cooling behavior of lowdensity (n ≲ 10 4 cm −3) primordial gas and devised a model which involves 19 collisional and 9 radiative processes and is applicable for temperatures in the range 1 K < T < 10 8K. In a companion paper (Anni...

We have developed a method of solving for multispecies chemical reaction flows in nonequilibrium and selfconsistently with the hydrodynamic equations in an expanding FLRW universe. The method is based on a backward differencing scheme for the required stability when solving stiff sets of ...

We have reviewed the chemistry and cooling behavior of lowdensity (n ≲ 10 4 cm −3) primordial gas and devised a model which involves 19 collisional and 9 radiative processes and is applicable for temperatures in the range 1 K < T < 10 8K. In a companion paper (Anni...