SUMMARY OF PROPOSAL 42035
DR. PAULA SZKODY
UNIVERSITY OF WASHINGTON
WA USA 98195
SEATTLE
BOX 351580

  E-mail: SZKODY@ASTRO.WASHINGTON.EDU	Tel: 206-543-1988	Fax: 206-685-0403
  Medium: 2GBDAT

Subject: CATACLYSMIC VARIABLES                                       
  Title: MEASURING THE HARD COMPONENT IN THE NEW BRIGHT AM HER SOURCES AR UMA AND J1802.1+1804


Abstract:
 We will use the sensitivity and spectral capabilities of ASCA to observe 2 recently
 discoved X-ray and optically bright AM Her magnetic cataclysmic variables: AR UMa
 and J1802.1+1804. Initial Einsten and ROSAT data indicate a soft/hard X-ray ratio
 near 100. The ASCA determination of the correct T distribution and flux for the hard
 X-ray flux will further understanding of the accretion process and the energy
 balance. The observed Fe, S, Ar line ratios of the brighter source (AR UMa) can be
 used to obtain the shock and white dwarf temperatures, and ultimately, the mass of the underlying white dwarf.

 Co-Is:
   1  ANDREW SILBER       	U OF W                        USA       
      (No Co-I contact data)
   2  K.P. SINGH          	GSFC                          USA       
   3  PAUL BARRETT        	GSFC                          USA       
   4  ERIC SCHLEGEL       	GSFC                          USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
AR UMA                 2  168.9371   42.9729    40   N   Y   P  0.33000   1