SUMMARY OF PROPOSAL 42155
DR. PETER SERLEMITSOS
NASA/GSFC
MD USA 20771
GREENBELT
CODE 666

  E-mail: LHEAVX::SERLEMITSOS	Tel: 301-286-5255	Fax: 301-286-1684
  Medium: 4GBDAT

Subject: AGN                                                         
  Title: DIAGNOSTICS OF AN ACTIVE NUCLEUS USING THE FURTHEST DETECTED QUASAR IRON K LINE AT Z


Abstract:
 The use of the iron K line as a diagnostic of the physical state and structure of
 the active nuclei (AGN) in Seyfert galaxies is maturing rapidly, yet there have been
 extremely few reports of iron K line detections in AGN/ quasars with 2-10 keV
 luminosity > 1.0e44 ergs/s. We propose to follow up a GINGA dectection of iron K
 emission in the furthest quasar yet, PKS 0637-752 (z=0.66). ASCA will measure the
 line energy and equivalent width and determine whether the line is broadened by
 Doppler and/or gravitational effects. Comparison with closer, lower luminosity AGN
 is expected to significntly contribuite to our understanding of the nature and
 structure of matter in the innermost regions of AGN.

 Co-Is:
   1  TAHIR YAQOOB        	NASA/GSFC/USRA                USA       
      LHEAVX::YAQOOB	301-286-5015
   2  PAUL NANDRA         	NASA/GSFC                     USA       
   3  IAN GEORGE          	NASA/GSFC/USRA                USA       
   4  JANE TURNER         	NASA/GSFC/USRA                USA       
   5  ANDREW PTAK         	NASA/GSFC/UMD                 USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
PKS 0637-752           0   98.9433  -75.2714    50   N   Y   P  0.40000   1