Rate My Professor David Ballantyne

David Ballantyne is a Professor and Associate Chair for Academic Programs in the School of Physics at the Georgia Institute of Technology. He earned a B.Sc. in Physics and Astronomy from the University of Victoria in 1998, an M.Sc. in Astrophysics from the University of Toronto in 1999, and a Ph.D. in Astronomy from the University of Cambridge in 2002, where he worked with Prof. A.C. Fabian on X-ray spectra of active galactic nuclei. After postdoctoral fellowships at the Canadian Institute for Theoretical Astrophysics from 2002 to 2005 and as Prize Postdoctoral Fellow in Theoretical Astrophysics at the University of Arizona from 2005 to 2008, Ballantyne joined Georgia Tech as Assistant Professor in 2008. He was promoted to Associate Professor in 2014 and to full Professor in 2020. His administrative roles include Associate Chair for Graduate Studies from 2017 to 2022, Interim Director of the Center for Relativistic Astrophysics in 2021-2022, and current Associate Chair for Academic Programs since 2023. Ballantyne is a founding faculty member of the Center for Relativistic Astrophysics.

Ballantyne specializes in high-energy astrophysics, with research interests in the physics of accretion disks around black holes and neutron stars, and the co-evolution of galaxies and supermassive black holes. He develops computer models to interpret observations from X-ray, radio, and infrared telescopes, focusing on spectral features in active galactic nuclei and X-ray bursts from neutron stars. Key publications include Ghobadi, Ballantyne, & Bogdanovi'c (2026) "Evolution of Supermassive Black Hole Pairs on Inclined Orbits in Post-Merger Galaxies" (ApJ); Boztepe et al. (2025) "The 2020 Superburst of 4U 1608-522 and its impact on the accretion disk" (MNRAS); Li et al. (2025) "Dense matter in neutron stars with eXTP" (Science China Physics, Mechanics & Astronomy); Malewicz et al. (2025) "X-ray Reflection Signatures of Supermassive Black Hole Binaries" (ApJ); and Ballantyne (2023) "Radiation Driven Warping of Accretion Discs Due to X-ray Bursts" (MNRAS). He has authored over 100 papers, with an h-index of 58 and more than 13,000 citations. Ballantyne received NASA Group Achievement Awards for the NuSTAR Extragalactic Survey Team (2016) and NuSTAR Science Team (2015), along with early-career fellowships such as the NSERC Postdoctoral Fellowship (2002) and Theoretical Astrophysics Prize Fellowship at Arizona (2005). He has given invited talks at numerous international workshops and colloquia, served on extensive committees at Georgia Tech including the Astrophysics Major Committee, and co-edited the Active Galactic Nuclei chapter in the LSST Science Book (2009).