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 753 for “"Astrophysics"”.
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Accretion topics in astrophysics
Accretion theory is essential for understanding a multitude of varied astronomical observations such as X-ray binaries, active galactic nuclei and gamma-ray bursts. In this document three works on accretion will be presented.The first one is on the structure of an inviscid accretion disc with small …
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Topics in Gravitational-Wave Astrophysics
<p>In this dissertation we study the applicability of different waveform models in</p> <p>gravitational wave searches for comparable mass binary black holes. We determine</p> <p>the domain of applicability of the computationally inexpensive closed form models,</p> <p>and the same for the …
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Applications of Numerical Relativity Beyond Astrophysics
… relativity which lie beyond the realm of astrophysics. One motivation for this comes from the AdS/CFT correspondence, which allows us to study strongly coupled quantum field theories by considering classical gravity with a negative cosmological constant. More concretely, we construct …
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Bayesian Methods and Machine Learning in Astrophysics
… for Bayesian inference and their applications in astrophysics. We principally discuss two related themes: advances in nested sampling (Chapters 3 to 5), and Bayesian sparse reconstruction of signals from noisy data (Chapters 6 and 7). Nested sampling is a popular method for Bayesian computation …
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Solving the N-body problem in astrophysics
… and time-reversible integration in astrophysics, whether we are integrating the N-body problem or other ordinary differential equations. These integrators have been proposed as an alternative to symplectic integration. I show, again using backward error analysis, that such …
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Generic FPGA Preprocessing for Astrophysics Instruments in HLS
<p>FPGAs are widely deployed on high-energy astroparticle physics instruments to preprocess large volumes of streaming data from various sensors. Increasingly, these deployments are finding their way to space-borne instruments, where constraints on size, weight, and power (SWaP) require careful …
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Weakly collisional electrostatic simulations for laboratory astrophysics applications
Modern plasma physics research is increasingly realizing the potential for cutting edge laser-produced plasma experiments to be exploited in order to investigate astrophysically relevant phenomena. Of particular interest are collisionless shocks, and the physics of the weakly collisional regime …
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Black Hole Astrophysics : Magnetohydrodynamics on the Kerr Geometry
This work is dedicated to the astrophysics of rotating black holes. The main topic concerns accretion physics in the regime of General Relativistic Magnetohydrodynamics (GRMHD). The behavior of non-radiative accretion flows and outflows on the Kerr space-time is analyzed. Basic equations of …
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The Solution of Two-Dimensional Problems in Astrophysics
Made available in DSpace on 2015-05-13T15:22:14Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7913461.PDF: 3745793 bytes, checksum: 1450d40f79f2f54fdec34020259e64cc (MD5) Previous issue date: 1978
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Standard model foregrounds in nuclear and particle astrophysics
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-05-21T15:27:15Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Chakraborty_Nachiketa.pdf: 1353171 bytes, checksum: 2370abaa785a3310bcbe9514150a39c2 (MD5)
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The solution of two dimensional problems in astrophysics
Many important problems in astrophysics cannot be solved accurately using spherically symmetric calculations. Techniques for studying the general hydrodynamic behavior of problems in two dimensional cylindrical coordinates with rotational symmetry are discussed. These techniques involve the …
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Acceleration of deep learning applications for astrophysics on FPGAs
The student, Mengshen Yun, accepted the attached license on 2021-12-09 at 10:48.
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General relativistic electrodynamics with applications in cosmology and astrophysics
Includes bibliographical references.
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Exploring fundamental physics and astrophysics with gravitational-wave sources
In this thesis, I investigate the new physics that can be learnt by the current and future gravitational wave (GW) observations. With the current observations, I study how multiple binary black hole (BBH) spin measurements can be combined by hierarchical Bayesian framework to search for ultralight …
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Systems analysis of an astrophysics mission utilizing electric propulsion
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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Time-Domain Astrophysics with the Transiting Exoplanet Survey Satellite
… for other science cases, ranging from stellar astrophysics to transient science. This thesis focuses on using TESS to study both the circumstellar environment and stellar interiors, as well as using the satellite to detect and characterize optical emission from gamma-ray bursts (GRBs). Chapter …
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