Astrophysics Luncheon Seminar
Jet Feedback on the ISM of Radio Galaxies
Presented by Lauranne Lanz
Infrared Processing and Analysis Center, California Institute of Technology
Monday, March 30, 2015
12:00 noon in 169-336
Feedback due to active galactic nuclei is one of the key components of the current paradigm of galaxy evolution; however, our understanding of its process remains incomplete. Radio galaxies with strong rotational H2 emission provide an interesting window into the effect of radio jet feedback on their host galaxies. These galaxies, also called molecular hydrogen emission galaxies (MOHEGs), contain large masses of warm (>100 K) H2, which cannot solely be heated by star formation, instead requiring jet-driven ISM turbulence to power the molecular emission. I will discuss the insights that X-ray observations of radio MOHEGs provide on the process by which the radio jets interact with their host ISM and the connections between the X-ray and H2 emission, focusing on recent work on the galaxies 3C293 and NGC4258. I will also summarize recent developments in the study of UV-FIR spectral energy distributions of radio MOHEGs, which has raised questions regarding the gas and dust properties of the host galaxies.
JPL Contact: Jorge Pineda (4-3347)