My main interest is clusters of galaxies -- in particular, physics of the intracluster medium, including its thermal component, magnetic fields and cosmic ray population. Cluster mergers, shock fronts, cold fronts (our Chandra discovery), cluster mass measurements using the hydrostatic equilibrium method are among the topics of interest. I'm working mostly with the X-ray data from Chandra and XMM; in the past, I also worked with ASCA, ROSAT and Granat. Currently I'm involved in preparations of the forthcoming Astro-H observatory (and am a member of the Astro-H Science working group), which will be the first to observe clusters with a microcalorimeter. I collaborate with radio people studying cluster synchrotron halos and those working in the Sunyaev-Zeldovich band. Apart from observations, I'm working closely with people running hydrodynamic simulations of the cluster mergers, with the goal of studying physics of the intracluster medium. My other area of interest is cosmology with clusters - e.g., the properties of dark matter.
X-ray and radio observations of shocks and cold fronts in galaxy clusters
Observational constraints on the physics of the intracluster plasma
Hydrodynamic simulations of gas sloshing in merging clusters and its effects on cool cores, magnetic fields and cosmic rays