A database on shape evolution of direct N -body models formed out of cold, dissipationless collapse is generated using GRAPE and HARP special purpose computers. Such models are important to understand the formation of elliptical galaxies. Three dynamically distinct phases of shape evolution were found, first a fast dynamical collapse which gives rise to the radial orbit instability (ROI) and ge...

The projected shell model analysis is carried out using the triaxial Nilsson+BCS basis. It is demonstrated that, for an accurate description of the moments of inertia in the transitional region, it is necessary to take the triaxiality into account and perform the three-dimensional angular-momentum projection from the triaxial Nilsson+BCS intrinsic wavefunction. PACS numbers : 21.60.Cs, 21.10.Hw...

Weakly Interacting Massive Particle (WIMP) direct detection experiments are closing in on the region of parameter space where neutralinos may constitute the Galactic halo dark matter. Numerical simulations and observations of galaxy halos indicate that the standard Maxwellian halo model is likely to be a poor approximation to the dark matter distribution. We examine how halo models with triaxia...

The current status of the application of covariant density functional theory to microscopic description of nuclear fission with main emphasis on superheavy nuclei (SHN) is reviewed. The softness of SHN in the triaxial plane leads to an emergence of several competing fission pathes in the region of the inner fission barrier in some of these nuclei. The outer fission barriers of SHN are considera...

M.W. Reed,1 G.J. Lane,1 G.D. Dracoulis,1 F.G. Kondev,2 A.P. Byrne,1 M. P. Carpenter,3 P. Chowdhury,4 R.O. Hughes,1 R.V.F. Janssens,3 T. Lauritsen,3 C.J. Lister,4, 3 D. Seweryniak,3 S. Zhu,3 H. Watanabe,1, 5 F.R. Xu,6 and W.G. Jiang6 1Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra ACT, Australia 2Nuclear Engineering Division, Argonne National Laboratory, Argonn...

We make the hypothesis that molecular cloud fragments are triaxial bodies with a large scale magnetic field oriented along the short axis. While consistent with theoretical expectations, this idea is supported by magnetic field strength data, which show strong evidence for flattening along the direction of the mean magnetic field. It is also consistent with early submillimeter polarization data...

Rotational behavior inducing triaxiality is discussed for Cr in the cranked NilssonStrutinsky (CNS) model, as well as in the spherical shell model. It is shown that the low-spin region up to about I=8, has a prolate well-deformed shape. At higher spins the shape is triaxial with a “negative-γ” deformation, that is, with rotation around the classically forbidden intermediate axis. By comparing c...

Void growth and morphology evolution in fcc bi-crystals are investigated using crystal plasticity finite element method. For that purpose, representative volume of with a void at the grain boundary considered analysis. Grain is assumed initially perpendicular/coaxial straight sides cell. Fully periodic conditions prescribed macroscopic stress triaxiality Lode parameter kept constant during whol...

We generate stellar distribution functions (DFs) in triaxial haloes in order to examine the reliability of slopes ≡ log M/ log r inferred by applying mass estimators of the form M ∝ Reσ 2 (i.e. assuming spherical symmetry, where Re and σ are luminous effective radius and global velocity dispersion, respectively) to two stellar subpopulations independently tracing the same gravitational potentia...

We investigate the intrinsic shapes of starless cores in the Orion GMC, using the prestellar core sample of Nutter & Ward-Thompson (2007), which is based on submillimeter SCUBA data. We employ a maximum-likelihood method to reconstruct the intrinsic distribution of ellipsoid axial ratios from observations of the axial ratios of projected plane-of-the-sky core ellipses. We find that, independent...