Global ETD Search
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 10 of 10 for “"Gravitational perturbations"”.
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Interstellar Gravitational Perturbations of Cometary Orbits
Made available in DSpace on 2014-12-12T00:17:47Z (GMT). No. of bitstreams: 1 7212154.pdf: 2691518 bytes, checksum: 30ec6fe43239395eef63314798ecafec (MD5) Previous issue date: 1971
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Modeling and Characterization of Structural, Thermophysical, and Dynamical Evolutions of Small Bodies in the Solar System
… of asteroids, a key factor giving rise to non-gravitational perturbations on their dynamics. Finally, the work extends to binary asteroid systems, coupling detailed shape models with full two-body gravitational dynamics and thermal torque modeling to quantify the effects of both impact-induced …
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Dust in circumstellar disks
… the inner disks is most likely the result of the gravitational influence of a large planet and/or a lack of dust-producing minor bodies in the dust-free region. Finally, I describe a numerical model to simulate the dynamical evolution of dust particles in debris disks, taking into account the …
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The influence of planetary and stellar companions on debris discs
… (SED) modelling or direct imaging of the dust. Gravitational perturbations in a system containing planets or multiple stars can influence the evolution of a disc and leave observable signatures in the disc’s structure, potentially allowing the inference of companions which are not directly …
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Leveraging numerical relativity formulations for perturbative analysis: applications to quasinormal modes in general relativity
… the simulation of compact object mergers, gravitational col-lapse, and other nonlinear phenomena. At the same time, perturbation theory provides a powerful analytical framework for understanding small deviations from equilibrium configurations, offering insights into gravitational wave …
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The Effects of Fractal Molecular Clouds on the Dynamical Evolution of Oort Cloud Comets
… interesting because it contains a record of the gravitational perturbations suffered by the solar system over its lifetime. Here, we investigate the effects of a particular class of perturbing objects - enormous complexes of molecular gas called giant molecular clouds (GMCs). Recent evidence has …
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Solar radiation pressure, drag and gravitational effects on a dust particle in Earth orbit
… by numerical integration. One of the predominant perturbations on particle orbits is the solar radiation pressure (SRP), which is defined as the pressure exerted by the photons constituting the light from the Sun. Colombo et. al studied the orbital dynamics of ``smart-dust'' under the effects of …
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The imprint of scalar clouds around Kerr black holes: hairy solutions and weak cosmic censorship
… of gauge allowed us to decouple the scalar field perturbations form the gravitational sector and perform the analysis by looking at the quasinormal mode spectrum of the hairy solutions. When the scalar field is real, these stationary hairy solutions do not exist, but scalar clouds still form …
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Frequency space analysis in General Relativity
… and half-integer s, describes the dynamics of perturbations of Kerr black holes in the linearized setting. We begin by showing that the Teukolsky equation is modally stable, i.e. that it admits no exponentially growing or bounded but non-decaying separable solutions. This result is novel for …
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Natural and perturbed dynamics about Trojan bodies
… is adopted far from the asteroid1, where the gravitational perturbations of the Sun and Jupiter are dominant while the inhomogeneities of the asteroid are negligible. Low-thrust propulsion perturbations are incorporated into this model. The possibility to determine the range of validity of …