SUMMARY OF PROPOSAL 41169
PROF. MASARU MATSUOKA
THE INSTITUTE OF PHYSICAL AND CHEMICAL RESEARCH (RIKEN)
SAITAMA JAPAN 351-01
WAKO-SHI
2-1 HIROSAWA

  E-mail: MATSUOKA@POSTMAN.RIKEN.GO.JP	Tel: 048-462-1111 EXT. 3221	Fax: 048-462-4640
  Medium: 4GBDAT

Subject: AGN                                                         
  Title: LOW LUMINOSITY TYPE 2 SEYFERT GALAXIES CAN CONTRIBUTE TO THE CXB ?              


Abstract:
 Recent ASCA and ROSAT observations have given us a common view on the CXB: (1)
 According to the ROSAT Log S - Log N, AGN as weak as 10-14~-15 erg/cm2/s contribute
 about 60% of the CXB (Hasinger et al. 1993). (2) ASCA Observations of bright high-z
 quasars showed different spectral indices from that of the CXB (Siebert, Matsuoka et
 al. 1995). (3) It is believed that low luminous AGN are major components of the CXB,
 but it is not yet clear what kind of AGN contribute to the CXB. Seyfert 2 galaxies
 are amongst the best candidates. So far observed Seyfert 2 galaxies by ASCA have
 luminosities as high as 10**43 erg/s in average. In this proposal we pick up some
 Seyfert 2 galaxies as low as 10**40-41 erg/s in X-ray luminosity, which are selected referring previous satellites results.

 Co-Is:
   1  MASSIMO CAPPI       	RIKEN                         JAPAN     
      (No Co-I contact data)
   2  CHIKO OTANI         	RIKEN                         JAPAN     
   3  TATEHIRO MIHARA     	RIKEN                         JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
          
NGC7582                2  349.5967  -42.3698    40   N   N   P  0.15000   1