X-ray Observations of `Normal' Early Type Galaxies: The Interaction Between Cooling Gaseous Coronae and Galaxy Activity

Details X-ray Observations of `Normal' Early Type Galaxies: The Interaction Between Cooling Gaseous Coronae and Galaxy Activity X-ray Observations of `Normal' Early Type Galaxies: The Interaction Between Cooling Gaseous Coronae and Galaxy Activity

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.8408k&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #84.08; Bulletin of the American Astronomical Society, Vol. 34, p.952

Astronomy and Astrophysics

Astronomy

Scientific paper

Recent Chandra and XMM-Newton observations of early galaxies have demonstrated that nuclear activity and outflow play a central role in the dynamics and evolution of their gaseous coronae These observations of optically 'normal' elliptical and S0 galaxies show complex interactions between relativistic, radio emitting plasmas produced by active nuclei and hot, X-ray emitting, coronae. In several cases X-ray cavities coincident with radio lobes have been detected that are the result of the expansion/inflation of the lobes into the ISM. In addition, sharp temperature and surface brightness discontinuities have been detected that are indicative of shocks being driven into the ISM from nuclear outbursts. Finally, we observe temperature and gas density discontinuities associated with galaxy motions, analagous to cluster cold fronts. In this talk, we will present results from X-ray and radio observations of a sample of early type galaxies, and discuss the dynamics of these radio plasma/hot corona interactions. Our sample of early galaxies includes M84, NGC 507, NGC 4472, NGC 5846, NGC 4636, and Centaurus A.

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