Talk Title: Outbursts from Supermassive Black Holes and Their Impact on the Hot Gas in Elliptical Galaxies
Abstract: We present the results of a study of the interaction between the supermassive black hole in M87 and its surrounding hot gas from a study of Chandra, ROSAT HRI, and XMM-Newton observations. Many X-ray features appear to be a direct result of repetitive AGN outbursts. In particular, we discuss X-ray cavities around the jet and counter jet and rings of enhanced emission at 14 and 17 kpc, probable shock fronts associated with outbursts that began $1-2\times10^7$ years ago. On larger scales, $\sim$50 kpc from the nucleus, depressions in the surface brightness may be remnants of earlier outbursts. For M87, the mean power driving the shock outburst, $2.4\times 10^{43}$~\ergssec, is three times greater than the radiative losses in the cooling core around M87.
In addition we will briefly discuss new Chandra observations of the jet in Cen A and present the results of a Chandra survey of over 100 early type galaxies. We will highlight nuclear outbursts in individual galaxies and show the correlation of nuclear X-ray luminosity with the black hole mass.
Link to talk: N/A