SUMMARY OF PROPOSAL 42064
DR KEN EBISAWA
LHEA/USRA
MD USA 20771
GREENBELT
CODE 668, NASA/GSFC

  E-mail: EBISAWA@SUBARU.GSFC.NASA.GOV	Tel: 301-286-1586	Fax: 301-286-1684
  Medium: 4GBDAT

Subject: X-RAY BINARIES                                              
  Title: STUDYING ABSORPTION LINE FEATURE IN THE RELATIVISTIC JET SOURCE GRS1915+105     


Abstract:
 The past year has seen independent discoveries of the two Galactic sources showing
 super-luminal motion, GRS1915+105 and GRO J1655-40. We have observed these two
 sources with ASCA, and discovered characteristic absorption line features. These
 features are unique in that they have never been seen from other persistent X-ray
 sources, and may be a signature of superluminal jet sources. We propose to observe
 GRS1915+105 using ASCA in conjunction with regular BATSE and radio observations. We
 plan to search for possible relations between absorption line features and hard X-ray or radio emission.

 Co-Is:
   1  TOSHIAKI TAKESHIMA  	LHEA/USRA, NASA/GSFC          USA       
      (No Co-I contact data)
   2  SHUANG ZAN          	NASA/MSFC                     USA       
   3  ALAN HARMON         	NASA/MSFC                     USA       
   4  ROGER FOSTER        	NRL                           USA       
   5  MARCO TAVANI        	COLUMBIA UNIV.                USA       
   6  TARO KOTANI         	ISAS                          JAPAN     
   7  NICHOLAS WHITE      	NASA/GSFC                     USA       
   8  YOSHIHIRO UEDA      	ISAS                          JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
GRS1915+105            0  288.7958   10.9458    20   N   Y   P  200.00000   2