SUMMARY OF PROPOSAL 42118
DR. GREG M. MADEJSKI
NASA/GODDARD
MD USA 20771
GREENBELT
GREENBELT RD.

  E-mail: LHEAVX::MADEJSKI	Tel: (301) 286-8099	Fax: 
  Medium: 4GBDAT

Subject: AGN                                                         
  Title: ASCA OBSERVATIONS OF BRIGHT SEYFERT GALAXY NGC 5506                             


Abstract:
 We propose an Asca observation of NGC 5506, one of the brightest Narrow-Line X-ray
 Galaxies, to be scheduled simultaneously with our approved XTE observation. This
 object, not yet observed by ASCA, shows spectral structure in the ROSAT data, which
 is best interpreted as a combination of neutral and ionized absorption, a unique
 property among NLXG. This object is rapidly variable, on a time scale of 10 ks; the
 ASCA data should allow us to track the variability of the level of ionization of the
 absorber as a function of its X-ray flux. The observation will also allow us to
 study the details of its strong (150 eV EW) Fe K line, and, together with the
 details of the low energy absorption, determine the relationship of NLXGs to Seyferts, and the Unified Schemes in general.

 Co-Is:
   1  JANE T. TURNER      	NASA/GODDARD                  USA       
      LHEAVX::TURNER	(301) 286-5190
   2  HAGAI NETZER        	UNIV. OF TEL AVIV             ISRAEL    
   3  IAN MCHARDY         	SOUTHAMPTON UNIV.             UK        


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
NGC5506                0  213.3083   -3.2072    60   N   Y   P  1.30000   1 

REMARKS:  THIS OBSERVATION WILL BE CONDUCTED AT THE SAME TIME AS THE XTE
          OBSERVATION, BUT THE XTE WILL BE SLAVED TO THE ASCA OBSERVATION.