SUMMARY OF PROPOSAL 41088
DR MASAYUKI ITOH
KOBE UNIVERSITY
HYOGOKEN JAPAN 657
KOBE
3-11 TSURUKABUTO

  E-mail: ITOH@NATURA.H.KOBE-U.AC.JP	Tel: 078-881-1212 EXT.7146	Fax: 078-803-0261
  Medium: 4GBDAT

Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION            
  Title: X-RAY EMISSION FROM SN1987A                                                     


Abstract:
 Because of its proximity, SN1987A is providing us with a unique opportunity to study
 an SNR in their very early phase of evolution. ROSAT detected soft X-rays from the
 SN in 1991-1992 observations, whose origin is probably the shock formed by the
 colliding ejecta and the wind remnant of the progenitor. In 1995 April, ASCA also
 detected the X-ray emission with flux of about 1E-13 erg/cm2/sec. Given the
 distribution of the circumstellar matter around the SN, increase of the X-ray
 luminosity is expected as the ejecta expands. Time evolution of the luminosity and
 spectrum will give valuable information on the circumstellar matter and the mass loss history of the progenitor.

 Co-Is:
   1  HAJIME INOUE        	ISAS                          JAPAN     
      INOUE@ASTRO.ISAS.AC.JP	0427-51-3911
   2  KEN'ICHI NOMOTO     	UNIVERSITY OF TOKYO           JAPAN     
   3  SHIOMI KUMAGAI      	UNIVERSITY OF TOKYO           JAPAN     
   4  TOMOHARU SUZUKI     	UNIVERSITY OF TOKYO           JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
SN1987A                2   83.8679  -69.2703    100   N   Y   P  0.00500   1 

REMARKS:  TO MINIMIZE THE INFLUENCE OF THE STRAY LIGHT FROM LMC X-1, PLEASE CONTACT
          THE PI FOR ATTITUDE PLANNING.