SUMMARY OF PROPOSAL 42127
DR. TAHIR YAQOOB
NASA/GSFC/USRA
MD USA 20771
GREENBELT
CODE 666

  E-mail: LHEAVX::YAQOOB	Tel: 301-286-5015	Fax: 301-286-1684
  Medium: 4GBDAT

Subject: AGN                                                         
  Title: RESPONSE OF THE IRON LINE TO THE RAPIDLY VARIABLE CONTINUUM IN NGC 7314         


Abstract:
 A previous ASCA observation of the Seyfert galaxy NGC 7314 revealed an X-ray
 continuum rapidly variable on a timescale of thousands of seconds and an averaged
 iron K alpha line profile showing complexity indicative of relativistic broadening.
 The response of the line to the continuum on these timescales was measured for the
 first time in any AGN and it was shown that the red wing of the line responds to the
 continuum faster than line core. >From this a crude estimate of the putative black
 hole mass was possible. We propose another observation to confirm the result with
 higher significance, investigate long-term behavior of the line, and to set even
 more stringent constraints on the structure and physics of the active nucleus.

 Co-Is:
   1  PETER SERLEMITSOS   	NASA/GSFC                     USA       
      LHEAVX::SERLEMITSOS	301-286-5255
   2  JANE TURNER         	NASA/GSFC/USRA                USA       
   3  IAN GEORGE          	NASA/GSFC/USRA                USA       
   4  PAUL NANDRA         	NASA/GSFC                     USA       
   5  ANDREW PTAK         	NASA/GSFC                     USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
NGC 7314               0  338.9417  -26.0503    50   N   Y   P  0.90000   1