SUMMARY OF PROPOSAL 42137
DR. CHRISTOPHER P. O'DEA
SPACE TELESCOPE SCIENCE INSTITUTE
MARYLAND USA 21218
BALTIMORE
3700 SAN MARTIN DR.

  E-mail: ODEA@STSCI.EDU	Tel: 410 338 2590	Fax: 410 338 5085
  Medium: 2GBDAT

Subject: AGN                                                         
  Title: PROBING THE NUCLEI OF GHZ PEAKED SPECTRUM GALAXIES                              


Abstract:
 We propose the first ASCA observations of GHz Peaked Spectrum (GPS) radio galaxies:
 powerful, but compact ( < kpc), sources which may be young radio galaxies which are
 struggling to break free of their dense and dusty circumnuclear medium. ROSAT
 observations of our two targets place upper limits of 3.0E42 ergs/s on their soft
 x-ray luminosity. Our proposed ASCA observations will allow us to determine whether
 the AGNs in the GPS sources are intrinsically weak in x-rays or are powerful but
 obscured. If we detect the AGN, this will favor the hypothesis that they are
 powerful nascent classical doubles and we will determine the absorbing column, thus
 probing the properties of the circumnuclear medium. We will have finally identified the progenitors of classical double radio sources.

 Co-Is:
   1  DIANA WORRALL       	SAO                           USA       
      DMW@CFA.HARVARD.EDU	617 495 7139
   2  STEFI BAUM          	STSCI                         USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
1345+125               0  206.8892   12.2901    20   N   Y   P  0.07000   1 
          
2352+495               0  358.7896   49.8356    20   N   Y   P  0.02000   1