Does AGN ``Feedback" in Galaxy Clusters Really Work?

Mathematics – Logic

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

3

Scientific paper

AGN ``feedback" has been employed for some time as a device to overcome the problems of galaxy mass functions predicted by ΛCDM cosmological models. Feedback has also been suggested as a means for solving the ``cooling flow" problem in galaxy clusters as well as a solution for the colors of BCGs in rich clusters. The key issue in such feedback models lies in the details of the energy transfer between the AGN outflow and ambient medium. For the case of galaxy clusters, we calculate the MHD evolution of AGN radio ``bubbles" in the ICM to estimate the mixing and energy transfer to the ICM. Magnetic effects inhibit mixing, and the use of such radio sources to reheat the ICM may not be as effective as has been proposed. In particular, the bubbles retain their basic structure for times of order 10^8 years, which is much longer than the mixing times obtained from purely hydrodynamic calculations.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Does AGN ``Feedback" in Galaxy Clusters Really Work? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Does AGN ``Feedback" in Galaxy Clusters Really Work?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Does AGN ``Feedback" in Galaxy Clusters Really Work? will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-989192

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.