Shock and Cold Front with a Tail? The Extreme Relic Cluster Abell 2443
Abstract
We propose a 100 ks ACIS-I exposure of the extreme radio relic cluster A2443. This cluster contains a (rare) ultra-steep spectrum (USS) relic which likely traces a merger-induced shock. Our 16 ks Cycle 12 observation reveals a ram-pressure stripped tail and two surface brightness edges which are consistent with a cold front near the core and shock near the relic. The proposed observation is designed to confirm the nature of these edges and examine the merger/USS relic connection in view of better understanding how these USS sources are tied to the merger energetics. USS relics are expected to be ubiquitous in upcoming low frequency surveys and have significance for particle acceleration studies and for tracing large scale structure evolution.
- Publication:
-
Chandra Proposal
- Pub Date:
- September 2012
- Bibcode:
- 2012cxo..prop.3662C