Contrary to several recent studies, we find strong evidence in the Sloan Digital Sky Survey for the “Holmberg Effect”, the tendency for the satellites of isolated late-type galaxies to align with the minor axis of the galactic disc. In the case of isolated earlytypes, we find that satellites tend to align with the major axis of the galaxy. Using mock catalogues generated from cosmological N -bo...

We investigate the necessary conditions for two spacetimes, which are solutions to Einstein field equations with an anisotropic matter source, be related each other by means of a conformal transformation. As result, we obtain that if one such spacetimes is generalization Robertson-Walker solution vanishing acceleration and vorticity, then has in this class as well, i.e. factor will constant fun...

We investigate anisotropic fluid cosmology in a situation where the spacetime metric back-reacts local, time-dependent way to presence of inhomogeneities. derive exact solutions Einstein field equations describing Friedmann-Lemaitre-Robertson-Walker (FLRW) large scale cosmological evolution local inhomogeneities and back reaction. use our derivation tackle constant problem. A emerges by averagi...

This paper presents Bingham-NODDI, a clinically-feasible technique for estimating the anisotropic orientation dispersion of neurites. Direct quantification of neurite morphology on clinical scanners was recently realised by a diffusion MRI technique known as neurite orientation dispersion and density imaging (NODDI). However in its current form NODDI cannot estimate anisotropic orientation disp...