A multi-wavelength view of cooling vs. AGN heating in the X-ray luminous
  cool-core of Abell 3581
  We report the results of a multi-wavelength study of the nearby galaxy group,
Abell 3581 (z=0.0218). This system hosts the most luminous cool core of any
nearby group and exhibits active radio mode feedback from the super-massive
black hole in its brightest group galaxy, IC 4374. The brightest galaxy has
suffered multiple active galactic nucleus outbursts, blowing bubbles into the
surrounding hot gas, which have resulted in the uplift of cool ionised gas into
the surrounding hot intragroup medium. High velocities, indicative of an
outflow, are observed close to the nucleus and coincident with the radio jet.
Thin dusty filaments accompany the uplifted, ionised gas. No extended star
formation is observed, however, a young cluster is detected just north of the
nucleus. The direction of rise of the bubbles has changed between outbursts.
This directional change is likely due to sloshing motions of the intragroup
medium. These sloshing motions also appear to be actively stripping the X-ray
cool core, as indicated by a spiraling cold front of high metallicity, low
temperature, low entropy gas.
