Menu Close
Professor of Astronomy & Astrophysics, Penn State

My main research interest in recent years has been is how the central engines of active galaxies work. I observe them in X-rays to probe the hottest parts of the accretion flow onto the supermassive black hole, and in the optical to study the line emitting gas, which may be the fuel for the central engine. I mostly observe radio-loud AGNs with one more goal in mind: getting clues to the process of formation of their relativistic jets.


  • –present
    Professor of Astronomy & Astrophysics, Pennsylvania State University