Primary research areas:

Computational astrophysics
Time domain
Higher dimensions, geometry of spacetime
Cosmology and the evolution of galaxies

I'm a lot interested in the dynamical history of our Milky Way - especially halo formation and the disruption of globular clusters and satellites. Also, I have a general interest in the capabilities arising from high-performance compputing, machine-learning algorithms and astrostatistical inference.

This has led me to various topics, among them the development of a general-relativistic raytracer, reverberation mapping of quasars in the SDSS survey, the classification of variable sources in large all-sky surveys and Milky Way structure and dynamics.

My current work is focused on understanding the spatial Galactic halo density and kinematics by getting high-precision velocities for RR Lyrae stars in the Milky Way. This is based on my preceding work that led to a catalog of variable sources for the the Pan-STARRS survey, among them more then 44,400 RR Lyrae stars covering 3/4 of the sky and extending to as much as 130 kpc.

Special expertises:

statistical methodology in astronomy:

3D modeling:

programming skills: