SUMMARY OF PROPOSAL 42173
DR. DIANA M. WORRALL
SMITHSONIAN ASTROPHYSICAL OBSERVATORY
MA USA 02138
CAMBRIDGE
60 GARDEN STREET

  E-mail: DMW@CFA.HARVARD.EDU	Tel: (617) 495-7139	Fax: (617) 495-7356
  Medium: 2GBDAT

Subject: AGN                                                         
  Title: ASCA SPECTROSCOPY TO TEST BL LAC/RADIO GALAXY UNIFICATION                       


Abstract:
 The separation of non-thermal and thermal components is a key ingredient for testing
 BL Lac/Radio Galaxy unification. While great strides have been made by observing
 carefully selected samples with ROSAT, there are two missing steps: (1) ROSAT
 imaging is unable to measure an extended thermal component in the presence of a
 bright point source (a BL Lac object) because of wings in the point spread, and (2)
 ROSAT spectroscopy cannot distinguish between non-thermal emission and small-scale
 hot gas in the unresolved emission from radio galaxies. We propose ASCA spectroscopy
 of the two best candidates from our complete ROSAT-observed sample in order to
 overcome these critical shortcomings. The ASCA spectral decomposition will probe the active nucleus and its gaseous environment.

 Co-Is:
   1  MARK BIRKINSHAW     	SAO                           USA       
      MB1@CFA.HARVARD.EDU	(617) 495-7146


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
NGC 4261               0  184.8467    5.8249    60   N   Y   P  0.04150   1 
          
3C 371                 0  271.7108   69.8250    50   N   Y   P  0.06900   1