SUMMARY OF SEQUENCE NUMBER 800068

SUMMARY OF SEQUENCE NUMBER 800068

Title: MERGING SUBSTRUCTURES IN NEARBY CLUSTERS OF GALAXIES

Observer: ROSE

Subject Category: Clusters of Galaxies

Seq: 800068 ObsId: 00892

Long-term Plan bin: no LTS bin

ABSTRACT

We propose to image a nearby rich double cluster of galaxies, A3125/A3128, with HRC-I. Ground-based optical imaging and spectroscopy, along with a ROSAT PSPC pointed observation, has established that there are at least two major mergers of subclusters ongoing in A3125/A3128 at present. Thus this double cluster represents a particularly favorable case for studying the way in which merging of substructures proceeds in the rich cluster environment. Our goal is to use the high spatial resolution of AXAF to resolve shocks and other transient disturbances in the hot intracluster medium (ICM) of A3125/A3128. These disturbances in the ICM should provide crucial information towards developing a comprehensive picture of the cluster merger phenomenon.

TARGET SUMMARY

TARGET NAME RADEC TIME SI GRAT TYPE TC ROLL PRE PHASE MULTI PRI
ABELL 3125
51.841667
-53.500000
10.00000
ACIS-I
NONE
GO
no
no
no
no
no
5

IMAGES

(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)

Roll/Visibility

PARAMETERS

Obscat Parameters