SUMMARY OF PROPOSAL 42128
PROFESSOR ANDREW STEPHEN WILSON
UNIVERSITY OF MARYLAND
MARYLAND USA 20742
COLLEGE PARK


  E-mail: WILSON@ASTRO.UMD.EDU	Tel: (301) 405 1519	Fax: (301) 314 9067
  Medium: 4GBDAT

Subject: AGN                                                         
  Title: THE RELATIONSHIP BETWEEN H2O MEGAMASERS AND HARD X-RAY SOURCES IN ACTIVE GALACTIC NUCLEI


Abstract:
 We propose to study with ASCA a complete sample of 14 water vapor megamasers in
 active galaxies. Nine of these objects have already been observed or are scheduled
 for observation with ASCA, and observations of the remaining 5 are requested here.
 The goals are to a) check whether the maser luminosities are related to the hard
 X-ray luminosities, as predicted by recent theoretical work, b) investigate whether
 the absorbing columns are fully accounted for by material in the accretion disks, c)
 determine whether galaxies with water vapor megamasers have larger column densities
 than those without, and d) estimate mass accretion rates and Eddington ratios. Data
 from a program of ongoing radio observations of the megamaser galaxies will be included in the analysis.

 Co-Is:
   1  JAMES BRAATZ        	UNIV OF MARYLAND              USA       
      JBRAATZ@ASTRO.UMD.EDU	(301) 405 1554
   2  CHRISTIAN HENKEL    	MPIFR, BONN                   GERMANY   
   3  KIMBERLY WEAVER     	JOHNS HOPKINS UNIV            USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
MARK 1                 0   19.0300   33.0896    20   N   Y   P  0.06400   1 

REMARKS:  ONCE THE ASCA OBSERVATIONS HAVE BEEN SCHEDULED, WE SHALL ATTEMPT TO
          ARRANGE SIMULTANEOUS RADIO OBSERVATIONS. THEREFORE, PLEASE TELL THE P.I.
          THE OBSERVATION DATE AS SOON AS KNOWN.
NGC1052                0   40.2696   -8.2558    40   N   Y   P  0.02700   1 

REMARKS:  ONCE THE ASCA OBSERVATIONS HAVE BEEN SCHEDULED, WE SHALL ATTEMPT TO
          ARRANGE SIMULTANEOUS RADIO OBSERVATIONS. THEREFORE, PLEASE TELL THE P.I.
          THE OBSERVATION DATE AS SOON AS KNOWN.
IC2560                 0  154.0800  -33.5648    40   N   Y   P  0.02700   1 

REMARKS:  ONCE THE ASCA OBSERVATIONS HAVE BEEN SCHEDULED, WE SHALL ATTEMPT TO
          ARRANGE SIMULTANEOUS RADIO OBSERVATIONS. THEREFORE, PLEASE TELL THE P.I.
          THE OBSERVATION DATE AS SOON AS KNOWN.

REMARKS:  ONCE THE ASCA OBSERVATIONS HAVE BEEN SCHEDULED, WE SHALL ATTEMPT TO
          ARRANGE SIMULTANEOUS RADIO OBSERVATIONS. THEREFORE, PLEASE TELL THE P.I.
          THE OBSERVATION DATE AS SOON AS KNOWN.

REMARKS:  ONCE THE ASCA OBSERVATIONS HAVE BEEN SCHEDULED, WE SHALL ATTEMPT TO
          ARRANGE SIMULTANEOUS RADIO OBSERVATIONS. THEREFORE, PLEASE TELL THE P.I.
          THE OBSERVATION DATE AS SOON AS KNOWN.