Collective Rotation in Nuclei Rapidly "Rotating" about a Symmetry Axis

Differential rotation in rapidly rotating F - stars ⋆ , ⋆ ⋆

We obtained high quality spectra of 135 stars of spectral types F and later and derived " overall " broadening functions in selected wavelength regions utilizing a Least Squares Deconvolution (LSD) procedure. Precision values of the projected rotational velocity v sin i were derived from the first zero of the Fourier transformed profiles and the shapes of the profiles were analyzed for effects ...

Level Statistics of Near-Yrast States in Rapidly Rotating Nuclei

The nearest neighbour level spacing distribution and the ∆3 statistics of level fluctuations associated with very high spin states (I >∼ 30) in rare-earth deformed nuclei are analysed by means of a cranked shell model. The many particle-many hole configurations created in the rotating Nilsson potential are mixed by the surface-delta two-body residual interaction. The levels in the near-yrast re...

Inverse cascade and symmetry breaking in rapidly rotating Boussinesq convection

The Critical Rotation of Strange Stars and Rapidly Rotating Pulsars

We utilize the bulk viscosity of interacting strange quark matter to reevaluate the damping time scale. The presence of medium effect of bulk viscosity leads to a stronger damping of rmodes, which can be over an order of magnitude for realistic parameters. We find that the r-mode instability window is narrowed due to the medium effect, and hence when a pulsar reaches the instability window it w...

An Elegant Intuitive Algorithm for Rotation about a Mobile Axis

Rotation Transformation is the backbone of visualization of 3D objects. Rotation transformations allow viewing objects from different angles. Rotations about the principal axes are straightforward whereas the rotation about an arbitrary axis is complex. In mobile environment, rotations is computed continuously as the objects move and is thus a costly operation. We give intuitive, constructive, ...