3 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Universe"  
Results: 1 - 3
open access

Floating into Thin Air

Description: On May 18, 2005, a giant helium balloon carrying the High Energy Focusing Telescope (HEFT) sailed into the spring sky over the deserts of New Mexico. The spindly steel and aluminum gondola that houses the optics, detectors, and other components of the telescope floated for 25 hours after its launch from Fort Sumner, New Mexico. For 21 of those hours, the balloon was nearly 40 kilometers above Earth's surface--almost four times higher than the altitude routinely flown by commercial jet aircraft.… more
Date: February 6, 2007
Creator: Hazi, A U
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cosmos++: Relativistic Magnetohydrodynamics on Unstructured Grids with Local Adaptive Refinement

Description: A new code and methodology are introduced for solving the fully general relativistic magnetohydrodynamic (GRMHD) equations using time-explicit, finite-volume discretization. The code has options for solving the GRMHD equations using traditional artificial-viscosity (AV) or non-oscillatory central difference (NOCD) methods, or a new extended AV (eAV) scheme using artificial-viscosity together with a dual energy-flux-conserving formulation. The dual energy approach allows for accurate modeling of… more
Date: May 6, 2005
Creator: Anninos, P; Fragile, P C & Salmonson, J D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Single photon induced symmetry breaking of H2 dissociation

Description: H{sub 2}, the smallest and most abundant molecule in the universe, has a perfectly symmetric ground state. What does it take to break this symmetry? Here we show that the inversion symmetry can be broken by absorption of a linearly polarized photon, which itself has inversion symmetry. In particular, the emission of a photoelectron with subsequent dissociation of the remaining H{sub 2}{sup +} fragment shows no symmetry with respect to the ionic H+ and neutral H atomic fragments. This result is … more
Date: December 6, 2006
Creator: Martin, F.; Fernandez, J.; Havermeier, T.; Foucar, L.; Weber, Th.; Kreidi, K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen