Selected Talks
Composition gradients and convection in dense interiors: giant planets and white dwarfs, from the workshop Beyond Boussinesq for Astrophysical and Geophysical fluids: Numerical tools and experiments of the future, Lyon, October 2023.
Open puzzles in Type I X-ray bursts: the role of fluid dynamics, from the workshop Weather and Climate on Neutron Stars, Princeton, April 2022.
Convective Layers and Layered Convection in Jupiter and other gas giant planets December 2019. How convection and composition gradients affect each other inside giant planets.
The Physics of Shallow Heating April 2019. A discussion of possible sources of shallow heating in accreting neutron stars.
The Thermal State of Giant Planets Formed By Core Accretion, from the workshop "Giant Planet Formation, Evolution and Internal Structure", Zurich, March 2018. How the accretion process determines the luminosities and internal structures of young gas giant planets.
Mass Loss and Winds in Type I X-ray Bursts, from the X-ray burst workshop held in Prato, Italy, June 2018. An overview of mass loss in Type I X-ray bursts and discussion of how to couple X-ray burst and wind models.
A New Perspective on Neutron Star Cooling, what we can learn about neutron star core physics by observing transiently accreting neutron stars in quiescence. From the COSPAR meeting held in Pasadena, July 2018.
Crustal Cooling of Neutron Stars, an overview of crust cooling in accreting neutron stars and magnetars, at the JINA-CEE International Symposium on Neutron Stars, Ohio University May 2016.
Type I X-ray Burst Physics and Neutron Star Radius Measurements A discussion of some of the physics puzzles in Type I X-ray bursts that are relevant for using bursts to measure the neutron star radius. From the conference The Neutron Star Radius and All That Jazz held in Montreal, July 2015.
Magnetic Field Evolution in Neutron Star Crusts, colloquium at Catolica University in Chile, October 2014. Open issues in magnetic field evolution in neutron stars, and how magnetic fields evolve in neutron star crusts, focussing on the recent discovery of a Hall attractor.
Nuclear Burning on Accreting Neutron Stars, given at the NS2014 conference in St. Petersburg, Russia, August 2014. In this talk, which covers open issues in nuclear burning on accreting neutron stars, I focus on the evidence for a shallow heat source in neutron star oceans and its possible link to the geometry of the accretion flow.
X-ray Bursts and Neutron Star Crusts, given at the Nuclear Astrophysics Town Hall Meeting in Detroit, October 2012. In this talk, I highlight recent progress and open issues in the nuclear astrophysics of accreting neutron stars.
Evidence For a New Heat Source At Low Densities in Neutron Star Crusts, talk at the COSPAR meeting in Montreal, 2008. The arguments from long Type I X-ray bursts and crust cooling observations that we need a shallow heat source in the outer layers of accreting neutron stars.