نتایج جستجو برای: triaxiality
تعداد نتایج: 412 فیلتر نتایج به سال:
ABSTRACT Counts of galaxy clusters offer a high-precision probe cosmology, but control systematic errors will determine the accuracy this measurement. Using Buzzard simulations, we quantify one such systematic, triaxiality distribution identified with redMaPPer optical cluster finding algorithm, which was used in Dark Energy Survey Year-1 (DES Y1) cosmology analysis. We test whether selection b...
We use a " hybrid " method, mixing variationally-determined triaxial nuclear Slater determinants, to calculate the response of 73 Ge to hypothetical dark-matter particles such as neutralinos. The method is a hybrid in that rota-tional invariance is approximately restored prior to variation and then fully restored before the mixing of intrinsic states. We discuss such features of 73 Ge as shape ...
Experimental and Numerical Investigation on Ductile-brittle Fracture Transition in a Magnesium Alloy
Tensile test on smooth and circumferentially notched specimens, systematic observation of fracture surfaces and large deformation finite element analysis were conducted to understand the deformation and failure behavior of a magnesium alloy (AM60). The plastic deformation is considered to be dominated by twining mediated slip. The tensile properties were not sensitive to the strain rates applie...
Superdeformed states in light N = Z nuclei are studied by means of the self-consistent cranking calculation (i.e., the P+QQ model based on the cranked Hartree-Fock-Bogoliubov method). Analyses are given for two typical cases of superdeformed bands in the A 40 mass region, that is, bands where backbending is absent (40Ca) or present (36Ar). Investigations are carried out particularly for the fol...
We obtain models for a triaxial Milky Way spheroid based on data by Newberg and Yanny. The best fits to the data occur for a spheroid centre that is shifted by 3 kpc from the Galactic Centre. We investigate effects of the triaxiality on the microlensing optical depth to the Large Magellanic Cloud (LMC). The optical depth can be used to ascertain the number of massive compact halo objects (MACHO...
The microstructure of a second-generation nickel base superalloy is studied using X-ray computed tomography (XCT) and scanning electron microscopy (SEM). as-cast material contains 0.15 (±0.001) vol% voids these are distributed in the inter-dendritic region. volume fraction increases to 0.21 after tensile deformation. Surface observations show evidence dislocation emissions from void surface, me...
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