SUMMARY OF PROPOSAL 41263
DR JEAN-LUC SAUVAGEOT
FACULTY OF SCIENCE, OSAKA UNIVERSITY
OSAKA JAPAN 560
TOYONAKA
1-1, MACHIKANEYAMA

  E-mail: JLS@ESS.SCI.OSAKA-U.AC.JP	Tel: 06-850-5478	Fax: 06-850-5539
  Medium: 4GBDAT

Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS                      
  Title: THE HIGH REDSHIFT X-RAY LUMINOSITY-TEMPERATURE RELATION OF GALAXY CLUSTERS      


Abstract:
 The X-ray Luminosity-Temperature correlation of High redshitt clusters of galaxies
 combined with the knowledge of the redshift distribution of flux selected clusters
 offer new possibility to measure the density of the universe. Oukbir et al. have
 shown that, with a few high z clusters, and taking into account the evolution needed
 in the case of an open model, the uncertainty of the derived Lx-T normalisations is
 small enough to distinguish between a critical and an open universe. The objective
 of the present proposal is to measure the temperature of 2 high z clusters, A851
 (z=0.402) and MS 1621+2640 (z=0.426) to determine Lx-T correlation and constraint
 the value of the density of the universe.

 Co-Is:
   1  HIROSHI TSUNEMI     	OSAKA UNIV.                   JAPAN     
      TSUNEMI@ESS.SCI.OSAKA-U.AC.JP	06-850-5476
   2  JAMILA OUKBIR       	BERKELEY UNIV.                USA       
   3  KIYOSHI HAYASHIDA   	OSAKA UNIV.                   JAPAN     
   4  KIYOSHI HASHIMOTODOTANI	OSAKA UNIV.                   JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
A 851                  3  145.7083   47.0044    40   N   N   P  0.03500   1 

REMARKS:  POINTING HAS TO BE OPTIMIZED WITHIN SIS AND GIS INSTRUMENTS IN ORDER TO
          GET THE MAXIMUM FLUX.

REMARKS:  POINTING HAS TO BE OPTIMIZED WITHIN SIS AND GIS INSTRUMENTS IN ORDER TO
          GET THE MAXIMUM FLUX.