SUMMARY OF SEQUENCE NUMBER 800067
SUMMARY OF SEQUENCE NUMBER 800067
Title: A2029: COOLING FLOW OR SHOCKED MERGER EVENT?
Observer: STOCKE
Subject Category: Clusters of Galaxies
Seq: 800067 ObsId: 00891
Long-term Plan bin: 12-Apr-2000
ABSTRACT
We propose to obtain a high spatial resolution temperature map of the core of the ``cooling flow'' cluster Abell 2029 to compare with detailed N-body+Hydro simulations on the same scale. Various pieces of evidence (no H$\alpha$ emission, no blue starlight, and the presence of a wide-angle-tail radio source) strongly suggest that the large central X-ray surface brightness excess is NOT due to a cooling with $\dot{\rm{M}} > 100$ M$_{\odot}$ yr$^{-1}$ but rather due to very hot shocked gas in a cluster-cluster merger. In this scenario filaments seen in the ROSAT HRI image are shock fronts which will remain unresolved with the ACIS-I, producing a spectacular AXAF image. The ACIS-I temperature will discern unambiguously if this cluster is a cooling flow or a merger event.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| A2029 |
227.733750 | 5.743889 |
20.00000 |
ACIS-S |
NONE |
GO |
yes |
no |
no |
no |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
