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 20 of 136 for “"binary systems"”.
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Rapid mass transfer in binary systems
… the conditions for rapid mass transfer in binary stars. Previous theoretical calculations and observations of binaries imply the existence of several different timescales for mass transfer: nuclear, thermal, or dynamical. Since the mass transfer rates differ by several orders of magnitude, …
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Connections between binary systems and admissible topologies
… triviality are studies for various algebraic systems. A continuity condition that always holds is exhibited as are new proofs for several old theorems. Consequences of imposing the tower topology on various algebraic systems are examined. If the proper subset I contained in the groupoid G is …
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Very High Energy Gamma-Rays from Binary Systems
… high energy (VHE) gamma-ray emission from X-ray binary systems using the H.E.S.S. imaging atmospheric Cherenkov array. The historical background and basic principles of ground-based gamma-ray astronomy are briefly reviewed and an overview of the design and capabilities of the H.E.S.S. telescope …
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Formation and evolution of hypernova progenitors in massive binary systems
… fraction of massive stars are members of binary systems. Tidal locking, mass transfer, or stellar merger in an evolved massive binary system could possibly lead to the transfer of orbital angular momentum to the core of one of the stars (or to the core of a merged star, if a common …
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Non-Equilibrium Disordering Processes In binary Systems Due to an Active Agent
… this thesis, we study the kinetic disordering of systems interacting with an agent or a walker. Our studies divide naturally into two classes: for the first, the dynamics of the walker conserves the total magnetization of the system, for the second, it does not. These distinct dynamics are …
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A study of the binary systems salicylic acid-biphenyl and salicylic acid-diphenylamine
1. From a study of the system salicylic acid-biphenyl it was concluded that there was no compound formation in the system. The solution is very nearly ideal, having an eutectic temperature of 67.6℃ at a mole fraction of .903 for the biphenyl. 2. The system salicylic acid-diphenylamine was studied …
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Liquid-vapor equilibria of the binary systems composed of methane, ethane, and carbon dioxide, The
Includes bibliographical references.
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Gravitomagnetic effects in compact binary systems : a study of spin-enhanced orbits around Kerr black holes
… research concerns the evolution of compact binary systems in which both members spin, particularly in the extreme mass ratio limit. Previous research has suggested that the effect of spin in such systems may be particularly significant-possibly even chaotic-near the homoclinic set of orbits, …
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A Feasibility Study for Using the ERAU Échelle Spectrograph to Improve Orbital Parameters of Spectroscopic Binary Systems
<p>Binary stars are critical for establishing knowledge of stellar masses and refining the mass-luminosity relationship when used in conjunction with precise parallax measurements. However, many spectroscopic binaries have poorly defined orbital parameters as they have not been revisited with newer …
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Experimental investigations of the thermodynamic properties of Nd-C and Ce-C binary systems for TRISO fuel applications
TRISO fuels are proposed for modular and niche nuclear power reactor technologies, expanding the global nuclear power inventory to meet increasing energy demands through small scale applications. Expansion is dependent upon the improvements to safety through thorough understanding of fission …
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Gravity wave signals from relativistic calculations of binary neutron star coalescence
… signature produced by coalescing neutron star binary systems. Additionally, we have studied the properties of remnants which may be formed during the merger process. We have introduced a hybrid post-Newtonian formalism, which treats lowest order 1PN relativistic terms at a reduced strength, to …
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Structural relaxation of binary food systems
… the study of structural relaxation into two binary food systems. It studied the effect of anti-plasticizer addition (i.e. addition of glucose syrup solid and addition of starch) on structural relaxation of sucrose based amorphous mixtures. It also studied the effect of plasticizer addition …
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A spectroscopic and photometric study of MSP companions in Galactic Globular Clusters
… Stars (BSS). In particular MSPs are formed in binary systems containing a Neutron Star which is spun up through mass accretion from the evolving companion (e.g. Bhattacharia & van den Heuvel 1991). The final stage of this recycling process is either the core of a peeled star (generally an …
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The behavior of O - C curves for contact binaries in the Kepler catalog
… we study the timing of eclipses for contact binary systems in the Kepler catalog. Observed eclipse times were determined from Kepler long-cadence light curves and "observed minus calculated" (0 - C) curves were generated for both primary and secondary eclipses of the contact binary systems. …
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The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System
Stellar binary systems are astronomical objects made of two stars gravitationally bound to each other. In some of these systems, the stars are so close that they interact with each other and affect the formation and evolution of one another. As a result, understanding these objects can provide …
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A catalog of new eclipsing binaries in the Kepler database
In this thesis, we present a catalog of binary stars discovered in the publicly available Kepler database, none of which were included in previous such catalogs published by the Kepler science team. A brief review of other binary star catalogs is given, including the Prs̆a et al. catalog on which …
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Binary star systems and extrasolar planets
… and our own solar system. Over half of star systems contain more than one stellar component. Despite this, binary stars have often been avoided by programs searching for planets. Discovery of giant planets in compact binary systems would indirectly probe the timescales of planet formation, an …
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The Study of Binary Steering Algorithms in Discrete Tomography
In this research project we will study the binary steering technique in iterative methods for image reconstruction in discrete tomography (DT). We will compare the effectiveness of three common algorithms to solve binary systems. The methods used are the Algebraic Reconstruction Technique (ART), …
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