SUMMARY OF PROPOSAL 52182
RUTGERS UNIVERSITY
P.O. BOX 849
PISCATAWAY
NJ USA 08855
Tel: 908-445-0908 Fax: 908-445-4343
Medium: 4GBDAT
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
ASCA OBSERVATIONS OF SUNYAEV-ZEL'DOVICH CLUSTERS
ABSTRACT
We propose ASCA observations of three clusters of galaxies which are targets for the Sunyaev-Zel'dovich (SZ) effect: A1682, A2146 and Z2701. These clusters were chosen so that selection effects that arise in determining the cosmic distance scale using SZ effect and X-ray data are tightly controlled. The ASCA data will provide the essential information on the temperature of the intracluster hot gas for the application and testing of the distance measuring technique. The proposed observations represent the first rigorous attempt to measure the selection effect biases in the SZ/X-ray distances, which must be understood before the distance-measuring techniques (which can, in principle, be applied at large redshifts) can be used with confidence.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MARK BIRKINSHAW | SAO | USA |
| JOHN CARLSTROM | CAL TECH | USA |
| LAURA GREGO | CAL TECH | USA |
| MARSHALL JOY | MSFC | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)A2259 | 1 | 260.0358 | 27.6683 | 46 ks | N | N | P | 0.26000 | 1 |