How compact object systems influence the microphysical, energetic, and dynamical properties of their surroundings.
Understanding how radiation (photons and particles, e.g., neutrinos) is produced in strong-gravity environments and subsequently attenuated by intervening media, thereby providing key information about the compact object, the state of the accreting material, and the underlying theory of gravity.
Calculating covariant and physically-accurate models of this radiation using a combination of phenomenology, theoretical physics, and computational astrophysics.
What I do
I authored and maintain the general-relativistic radiation transport (GRRT) code, “BHOSS”, which solves the equations of covariant polarised radiation transport and fully incorporates the effects of both special relativity and general relativity (or any metric theory of gravity).
By interfacing GRRT with general-relativistic magnetohydrodynamics (GRMHD) simulations, I calculate the multi-frequency polarised emissions from turbulent plasmas surrounding black holes.
These calculations enable constraints on black-hole mass and spin, accretion physics, and facilitate strong-field tests of gravity.
What I’m part of
Full member of the Event Horizon Telescope (EHT) collaboration since 2014. Since 2022: serving member of the EHT Science Council and co-chair the Gravitational Physics working group.