DD.4.02 — Sloshing, Shocks, and Bubbles in Clusters of Galaxies

Date & Time

Aug 7th at 6:30 PM until 6:45 PM




Rating ( votes)

Author(s): Elizabeth L. Blanton1, Rachel Paterno-Mahler1, Scott Randall3, Tracy Clarke5, Craig Sarazin7, Brian McNamara8, Emmet Golden-Marx1, M.L.N. Ashby3, Joshua Wing3, Edmund Douglass2, Michael McDonald4, Mark Brodwin6

Institution(s): 1. Boston University, 2. Farmingdale State University, 3. Harvard-Smithsonian Center for Astrophysics, 4. MIT, 5. Naval Research Laboratory, 6. Univeristy of Missouri, 7. University of Virginia, 8. University of Waterloo

Chandra X-ray observations of clusters of galaxies reveal, with exquisite detail, complex structures in the X-ray emission related to feedback from AGN in cluster cores as well as sloshing features related to cluster-cluster interactions. In Abell 2052, multiple sets of bubbles are observed and at least one shock driven by AGN feedback is confirmed with a measured temperature rise. A merger-induced sloshing spiral is detected with cooler temperatures and higher abundances than its surroundings. In Abell 2029, the largest continuous sloshing spiral is revealed. The sloshing gas appears to be interacting with the central AGN's radio lobes causing them to distort. Sloshing may be an important mechanism for the creation of bent, wide-angle tail radio sources. We are using these types of radio sources as signposts for high-redshift clusters since they attain their morphologies through interaction with the surrounding intracluster medium.