SUMMARY OF PROPOSAL 43049
DR GORDON C STEWART
LEICESTER UNIVERSITY
 UK LE1 7RH
LEICESTER
UNIVERSITY ROAD

  E-mail: GCS@STAR.LE.AC.UK	Tel: +44 (0)116 252 3554	Fax: +44 (0)116 252 3311
  Medium: 4GBDAT

Subject: COSMIC X-RAY BACKGROUND AND DEEP SURVEYS AND OTHER          
  Title: HARD X-RAY OBSERVATIONS OF A DEEP ROSAT FIELD                                   


Abstract:
 We propose a deep ASCA observation of one of our deep ROSAT fields Our goals are:
 (i) to measure individual and summed X-ray spectra of the ROSAT sources in the
 2-10keV band, in order to (ii) establish the contribution of ROSAT AGN and X-ray
 luminous galaxies to the harder XRB; (iii) to search for 2-10 keV emission from
 other, heavily absorbed AGN or other sources. We focus our attention on a deep ROSAT
 field where we have achieved a greater than 80\% optical identification rate including redshift information.

 Co-Is:
   1  TOM SHANKS          	DURHAM UNIVERSITY             UK        
      (No Co-I contact data)
   2  RICHARD GRIFFITHS   	STSCI                         USA       
   3  ADAM BLAIR          	LEICESTER UNIVERITY           UK        
   4  IOANNIS GEORGANTOPOULOS	TBA                           GREECE    


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
BJS864                 3  161.6000    0.2511    80   N   N   P  0.10000   1 

REMARKS:           MODE TO BE DETERMINED WITH DUTY SCIENTIST