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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

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Showing 1 to 20 of 21 for “"differential rotation"”.

  1. New insights into the differential rotation of the inner core

    Yang, YiUniversity of Illinois at Urbana-Champaign2020

    … provided compelling evidence for an IC differential motion. In this dissertation, we conducted a systematic search for strong repeating earthquakes in the last three decades to examine the global and regional patterns of the temporal changes of the IC. We performed extensive analyses on …

    uiuc Repository record

  2. Robotic telescopes & Doppler imaging : measuring differential rotation on long-period active stars

    Weber, Michael H.Universität Potsdam

    … wird der Dynamo teils von der differenziellen Rotation, teils von den magnetischen Turbulenzen in der Konvektionszone. Die differentielle Rotation kann an der Sonnenoberfläche durch beobachten der Sonnenfleckbewegungen gemessen werden.Um einen größeren Parameterraum zum Testen von …

    potsdam-diss Repository record

  3. Formation and stability of the solar tachocline in MHD simulations

    Sule, AniketUniversität Potsdam

    … convection zone, which has a mainly latitudinal differential rotation profile. This layer has a thickness of less than $0.05R_{\sun}$ and is subject to extreme radial as well as latitudinal shears. Helioseismological estimates put this layer at roughly $0.7R_{\sun}$. The tachocline mostly resides …

    potsdam-diss Repository record

  4. Visualization of the Vortex Lattice Dynamics in Superfluid Helium

    Gaff, Kristina Teresa2010

    … permits investigation into new phenomena such as differential rotation in helium-II. We have observed the vortex lattice dynamics in the (r, &phi) plane (i.e. transverse to the vortices) and present here the first real-time visualization of Tkachenko waves in helium-II from this cross section. …

    maryland Repository record

  5. Turbulence and Transport in Stars and Planets

    Jermyn, Adam SeanUniversity of Cambridge2018

    … scaling relations for the magnitude of differential rotation. In slowly-rotating systems the differential rotation is characterised by a power law with exponent of order unity, while in rapidly-rotating systems this exponent is strongly suppressed by the rotation. This provides a full …

    cambridge Repository record

  6. Supernova-driven turbulence and magnetic field amplification in disk galaxies

    Gressel, OliverUniversität Potsdam

    … for vertical stratification and galactic differential rotation, we find an exponential amplification of the mean field on timescales of 100Myr. The self-consistent numerical verification of such a “fast dynamo” is highly beneficial in explaining the observed strong magnetic fields in young …

    potsdam-diss Repository record

  7. Magnetic Stability Analysis for the Geodynamo

    Livermore, PhilipUniversity of Leeds2004

    … by some large scale process, for example, differential rotation or convection. Historically, workers have applied eigenvalue stability analysis and although in some cases Earth-like solutions have been found, the results hinge critically on the precise choice of flow. We therefore cannot …

    whiterose Repository record

  8. Spot evolution on the red giant star XX Triangulum

    Künstler, AndreasUniversität Potsdam

    … Doppler maps further enables to investigate the differential rotation of XX Tri. We therefore applied a cross-correlation analysis. We detect a weak solar-like differential rotation with a surface shear of α = 0.016±0.003. This value agrees with similar studies of other RS CVn stars. Furthermore, …

    potsdam-diss Repository record

  9. ΣΥΜΒΟΛΗ ΣΤΟ ΠΡΟΒΛΗΜΑ ΤΗΣ ΔΙΑΦΟΡΙΚΗΣ ΠΕΡΙΣΤΡΟΦΗΣ ΕΝΟΣ ΛΕΥΚΟΥ ΝΑΝΟΥ ΜΕ ΑΝΑΠΤΥΞΗ ΚΑΙ ΕΦΑΡΜΟΓΗ ΘΕΩΡΙΩΝ ΔΙΑΤΑΡΑΧΗΣ

    Hadjopoulos, Anastasios, Χατζόπουλος, ΑναστάσιοςUniversity of Patras1991

    … STUDY OF AN EITHER UNIFORM OR NONUNIFORM ROTATION OF A COMPLETELY DEGENERATE ELECTRON GAS CONTINUUM, FORMING A WHITE DWAR. THE AIM OF CHAPTER 1 IS TO SPECIFY THE STRUCTURE DIFFERENTIALLY ROTATING WHITE DWARF BY EXTENDING CHANDRASEKHAR'S METHOD TO INCLUDE UP TO THIRD ORDER TERMS IN THE …

    greece Repository record

  10. The morphology and absolute diameters of galaxies

    Block, David LazarDepartment of Astronomy1980

    … inner morphology often indicative of substantial differential rotation effects. One of our galaxies in the sample shows significant signs of warping; the spiral has no bright, close companions. Also of note are faint, featureless outer envelopes in some of the spirals, and galaxies with faint …

    cape-town Repository record

  11. Dynamical evolution of rotating globular clusters with embedded black holes

    Fiestas, JoséUniversität Heidelberg

    … this field, as flattening of the system due to differential rotation is allowed. The axisymmetric system is modelled using 2-dimensional, in energy and z-component of angular momentum, Fokker Planck numerical methods. The interplay between velocity diffusion due to relaxation and black hole star …

    heid-diss Repository record

  12. Field monitoring and numerical analysis of two Illinois integral abutment bridges

    Brambila, GabrielaUniversity of Illinois at Urbana-Champaign2017

    … girder, and approach slab strains, and iii) rotations at different abutment interfaces. Field monitoring results corroborate that IAB longitudinal expansion and contraction is somewhat less than theoretical free expansion and contraction, and is influenced by bridge skew. Pile strain values …

    uiuc Repository record

  13. Disk-magnetosphere interaction in X-ray binaries

    Daumerie, Pascal R.2011

    … poles, and X-ray pulsations result from the rotation of the beamed emission at the magnetic poles through the line of sight. In many systems, accretion proceeds via a Keplerian accretion disk. The differential rotation of the disk and star creates magnetic stresses that disrupt the Keplerian …

    uiuc Repository record

  14. Rotating, hydromagnetic laboratory experiment modelling planetary cores

    Kelley, Douglas H.2009

    … spherical shell. The fluid is driven by the differential rotation of these two boundaries, each of which is connected to a motor. Applying an axial, DC magnetic field, we use a collection of Hall probes to measure the magnetic induction that results from interactions between the applied field …

    maryland Repository record

  15. Numerical Construction of Gravitational Solutions in Asymptotically Anti-de Sitter Spacetimes

    Markeviciute, JulijaUniversity of Cambridge2019

    … global AdS solutions by turning on a dipolar differential rotation at the conformal boundary. At fixed energy and boundary profile, we find two different geometries: a horizonless AdS soliton, and a deformed black hole. Both solutions develop an ergoregion attached to the boundary, and are …

    cambridge Repository record

  16. Numerical investigations of vortex dynamics: bursting, twist waves, and sensitivity analysis

    Ji, LingboMassachusetts Institute of Technology2025

    … high-fidelity numerical simulations. The differential rotation along the vortex tubes generates twist wave packets that propagate and collide, resulting in a sudden increase in the local core size – the phenomenon of bursting. We analyze the effects of perturbation amplitudes on the …

    mit Repository record

  17. Horizontal vorticity redistribution and vortex alignment in developing and mature tropical cyclones

    Reasor, Paul D., author, Montgomery, Michael T., advisor, Schubert, Wayne, committee member, Rutledge, Steve A., committee member, Kirby, Michael, committee member, Marks, Frank D., Jr., committee memberColorado State University. Libraries2000

    … propagation, long lifetime, and resistance to differential rotation, behaving much like a discrete vortex Rossby wave. The quasi-mode traps disturbance energy causing the vortex to precess and thus prevents alignment. For internal deformation radii smaller than the horizontal vortex scale, the …

    colostate Repository record

  18. New Theory for Zonal and Meridional Flows in the Solar Convection Zone; and a Simple Model for Secular Orbit Oscillations

    Hester, Richard2025

    gmu

  19. Well balanced Arbitrary-Lagrangian-Eulerian Finite Volume schemes on moving nonconforming meshes for non-conservative Hyperbolic systems

    Gaburro, ElenaUniversità degli studi di Trento2018

    … coordinates vortical flows affected by strong differential rotation: in particular, the novel combination with the well balancing make it possible to obtain great results for challenging astronomical phenomena as the rotating Keplerian disk. Indeed, we have formulated a new HLL-type and a novel …

    trento Repository record

  20. Open cluster groups and complexes

    Conrad, ClaudiaUniversität Potsdam

    … such as radial migration, disc heating, differential rotation, kinematic resonances, and spiral structure. In the past decade there were a few studies on open cluster pairs (de La Fuente Marcos & de La Fuente Marcos 2009a,b,c) and on open cluster groups and complexes (Piskunov et al. …

    potsdam-diss Repository record

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