20 May 2004
20 May 2004
Speaker: Christine Jones (Smithsonian Astrophysical Observatory)
The Impacts of AGN Outbursts on the Hot Gaseous Atmospheres of
In many elliptical galaxies, including those at the centers of
clusters, Chandra observations show the impact of AGN outbursts on the
surrounding hot gas. These outbursts, which can be associated with
nuclear jets, create X-ray cavities in the core. Observations of M87
in the Virgo cluster also show rings of enhanced emission that are
probably shock fronts, similar to those seen in the Perseus cluster.
For galaxies in less dense environments, the impact of AGN outbursts
also can be dramatic. This talk will present recent Chandra
observations of the active galaxies M87 and Centaurus A, as well as
results for "normal" ellipticals.
Video of the Presentation
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References for students:
"X-Ray Emission from the Hot Interstellar Medium and Southwest Radio Lobe of the Nearby Radio Galaxy Centaurus A"
Kraft et al. 2003 ApJ 592, 129
"Reflections of AGN Outbursts in the Gaseous Atmosphere of M87"
Forman et al astro-ph/0312576