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Tatooine's Future: Dynamical Evolution of Planets Orbiting Two Stars
Science fiction has long teased our imaginations with tales of planets with two suns. How these planets form and evolve, and their survival prospects, are active fields of research. Expanding on previous work, four new ...
A Search For Warm-Hot Intergalactic Matter in the Local Sheet of Galaxies
30-40% of all baryons in the Universe are thought to reside in the warm-hot intergalactic medium (WHIM) at temperatures in the range of 10^5-10^7 K. If the oxygen abundance is comparable to expectations, then OVI absorption ...
Cosmic Bubble Collisions: Observable Signature of a Classical Transition
The theory of inflation was introduced to resolve many existing observational problems in cosmology. Inflation becomes eternal when a region of space continuously spawns non-inflation regions. This process arises from ...
Topological Dynamical Systems Methods in Early-Universe Cosmologies
This dissertation describes some important problems that we have tried to solve with respect to the state of the early universe, that is, the universe shortly after the Big Bang. Standard early-universe cosmological ...
Disc Winds and Line-Width Distributions in Active Galactic Nuclei
We study Active Galactic Nucleus (AGN) emission-line profiles by combining an improved version of the accretion disc-wind model of Murray & Chiang with the magnetohydrodynamic model of Emmering et al. We consider central ...