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Numerics of Spacecraft Dynamics
(Turun yliopisto, 2011-02-26)
Whenever a spacecraft is launched it is essential that the algorithms in the on-board software systems and at ground control are efficient and reliable over extended periods of time. Geometric numerical integrators, and ...
Quantum Tomography with Phase Space Measurements
(Turun yliopistoAnnales Universitatis Turkuensis A I 441, 2012-09-08)
This thesis addresses the use of covariant phase space observables in quantum tomography. Necessary and sufficient conditions for the informational completeness of covariant phase space observables are proved, and some ...
Multifrequency VLBI Observations of Selected Active Galactic Nuclei
(Turun yliopistoAnnales Universitatis Turkuensis A I 425, 2011-10-15)
In this dissertation, active galactic nuclei (AGN) are discussed, as they are seen with the high-resolution radio-astronomical technique called Very Long Baseline Interferometry (VLBI). This observational technique provides ...
The effect of various doping methods on superconducting properties of pulsed laser deposited YBa(2)Cu(3)O(7-delta) thin films
(Turun yliopistoAnnales Universitatis Turkuensis A I 432, 2011-12-03)
Acceleration of Solar Energetic Particles in coronal shocks through self-generated turbulence
(Turun yliopistoAnnales Universitatis Turkuensis A I 475, 2013-12-05)
The acceleration of solar energetic particles (SEPs) by flares and coronal mass ejections (CMEs) has been a major topic of research for the solar-terrestrial physics and geophysics communities for decades. This thesis ...
On Topological Solitons in The Faddeev-Skyrme Model and its Extensions
(Turun yliopistoAnnales Universitatis Turkuensis AI 399, 2009-06-26)
The topological solitons of two classical field theories, the Faddeev-Skyrme model and the Ginzburg-Landau model are studied numerically and analytically in this work. The aim is to gain information on the existence and ...
Environments of Acitive Galaxies
(Turun yliopistoAnnales Universitatis Turkuensis A I 447, 2012-11-10)
This dissertation presents studies on the environments of active galaxies. Paper I is a case study of a cluster of galaxies containing BL Lac object RGB 1745+398. We measured the velocity dispersion, mass, and richness ...
Atomic scale engineering and understanding of novel interfaces between oxide films and semiconductor crystals
(Turun yliopistoAnnales Universitatis Turkuensis A I 551, 2017-02-04)
Surface properties of semiconductor crystals play a significant role in the operation of different devices like transistors, LEDs, and solar cells. For better performance of the devices, it is ...
Studies of Solar Activity with Emphasis on Quasi-Periodic Oscillations
(Turun yliopistoAnnales Universitatis Turkuensis A I 467, 2013-09-07)
In this thesis mainly long quasi-periodic solar oscillations in various solar atmospheric structures are discussed, based on data obtained at several wavelengths, focussing, however, mainly on radio frequencies. Sunspot ...
Superconducting properties and their enhancement in ReBa2Cu3O7-delta (RE = Y and Gd) films prepared by pulsed laser deposition
(Turun yliopistoAnnales Universitatis Turkuensis A I 411, 2010-09-25)