recent papers


Atmospheric Escape Processes and Planetary Atmospheric Evolution
A Model of the Halpha and NaD Transmission Spectrum of HD 189733b 

A New Model of Roche-lobe Overflow for Short-Period Gaseous Planets and Binary Stars 
Tidal Decay and Stable Roche-Lobe Overflow of Short-Period Gaseous Exoplanets 
Investigation of the environment around close-in transiting exoplanets using CLOUDY 
Axisymmetric Simulations of Hot Jupiter-Stellar Wind Hydrodynamic Interaction 
Magnetohydrodynamic Simulations of Hot Jupiter Upper Atmospheres 
Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars 
Halpha Absorption in Transiting Exoplanet Atmospheres 
The Radial Velocity Signature of Tides Raised in Stars Hosting Exoplanets 
Hot Jupiter Magnetospheres 
Thermal Tides in Fluid Extrasolar Planets 
Massive Satellites of Close-In Gas Giant Exoplanets 
The Role of Planet Accretion in Creating the Next Generation of Red Giant Rapid Rotators 
Thermal Tides in Short Period Exoplanets 
Thermal Structure and Radius Evolution of Irradiated Gas Giant Planets 

Stellar oscillations and tidal evolution 

Tides in the high-eccentricity migration of hot Jupiters: Triggering diffusive growth by nonlinear mode interactions
Nonlinear Mixed Modes in Red Giants 
Orbital Decay in Binaries Containing Post-Main Sequence Stars 
Dynamical resonance locking in tidally interacting binary systems 
Tidal resonance locks in inspiraling white dwarf binaries 
An instability due to the nonlinear coupling of p-modes to g-modes: Implications for coalescing neutron star binaries 
Nonlinear Tides in Close Binary Systems 
Tidal asteroseismology: Kepler's KOI-54 
Pulsations in Hydrogen Burning Low Mass Helium White Dwarfs 
Ellipsoidal Oscillations Induced by Substellar Companions: A Prospect for the Kepler Mission 
Pulsational Instabilities in Accreting White Dwarfs 
Seismology of Accreting White Dwarfs 

Compact stars and binaries 

I-Love-Q relations for realistic white dwarfs

Urca reactions during neutron star inspiral 
Formation of Extremely Low-mass White Dwarfs Binaries 
Using long-term millisecond pulsar timing to obtain physical characteristics of the bulge globular cluster Terzan 5 
Seismology of Rapidly Rotating Accreting White Dwarfs  
Diffusive Nuclear Burning of Helium on Neutron Stars 
Oscillation modes of relativistic slender tori 
Quasi-Periodic Oscillations from Magnetorotational Turbulence 


Astrophysical Processes (ASTR 4810/5010)

The beauty of astronomical images can be immediately ap- preciated. A harder won, but equally as beautiful understanding of celestial objects comes from application of math and physics to reveal how they work in detail. This course involves learning the physics required to understand a broad array of objects in the universe. Almost all normal matter in the universe is a fluid, and the first major theme of the course is learning and applying the equations of motion for a fluid. Radiation is important for the structure and cooling of objects, as well as the primary means by which we gain information about the uni- verse. Hence the second major theme of this course is concerned with the production of radiation and how it interacts with matter. In addition to these two topics, which will be new for most students, we will also carry out applications of undergraduate-level physics to objects in nature.

Alien Worlds (ASTR 1250)

Alien worlds orbiting other stars were the subject of speculation going back to ancient times, and were finally discovered in the 1990's. Thousands of extrasolar planets, and hundreds of multiple-planet systems, are now known and show a remarkable variety compared to our own solar system. This course discusses the known exoplanets: how they are discovered, as well as their orbits and physical properties. The theoretical understanding of planet formation and evolution will be used to understand the known planets, how they likely formed, and their ultimate fate.