SUMMARY OF PROPOSAL 81405
KANAGAWA JAPAN 229-8510
Tel: 042-759-8136 Fax: 042-759-8455
Medium: CD ROM
Subject: X-RAY BINARIES
CONTINUOUS BROADBAND OBSERVATION OF THE GALACTIC JET SOURCE GRS1915+105
ABSTRACTWe propose simultaneous X-ray and $\gamma$-ray observations of microquasar GRS~1915+105 with ASCA and CGRO over a week. The purpose of this observation is to make the singularity of microquasars clear by understanding the origin of $\gamma$-ray continuum, so-called 'hard tail' and the origin of highly ionized plasma which produces resonance absorption lines. GRS~1915+105 is one of the most brightest and variable X-ray sources, whose time scale of the variability is between several micro seconds and several months, but no one has investigated the long intensity variation in the multi-wavelength yet. This observation will be last possible opportunity for long, coordinated, broadband coverage. So we think that ASCA has to take the leadership of this campaign.
|CO-I NAME ||INSTITUTE ||COUNTRY |
| HAJIME INOUE||ISAS||JAPAN|
| AYA KUBOTA||UNIV. OF TOKYO||JAPAN|
| MICHAEL MACCROUGH||NASA/MSFC||USA|
| ERIC GROVE||NRL||USA|
|TARGET NAME||PRI||RA||DEC||TIME||TC||OFF||GIS||SIS CNT||OBS|
|1)GRS1915+105|| A||288.7979|| 10.9458|| 300 ks||N||N||P||150.00000||1|
TARGET 1WE HOPE TO OBSERVE GRS1915+105 SIMULATANEOUSLY WITH ASTRO-E DURING ASCA OBSERVATION.