SUMMARY OF PROPOSAL 61227
ISAS
KANAGAWA JAPAN 229
SAGAMIHARA
3-1-1, YOSHINODAI
Tel: 0423-51-3911 Fax: 0423-59-4253
Medium: 2.5GB8MM
Subject: COSMIC X-RAY BACKGROUND DEEP SURVEYS AND OTHER
GAMMA-RAY BURST ;GRB 970616
ABSTRACT
Soon after the discovery of a fading X-ray source with Beppo-SAX, an optical transient coincided with the GRB 970228 in position and in time was reported. However the divergence of the observed results of other GRBs (GRB 970111, 970402 and 970616) cannot afford us to a firm conclusion in origin of them. For example of GRB 970616, there was no any fading X-ray counterpart confirmed and no any optical transient were announced. These were fully inconsistent with the Beppo-SAX case of GRB 970228 and GRB 970508. We propose to observe GRB 970616, which was once observed resulting 4 X-ray sources, again to confirm the X-ray counterpart.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| YOSHIHIRO UEDA | ISAS | JAPAN |
| RYO SHIBATA | ISAS | JAPAN |
| YASUO TANAKA | UNIV. OF AMSTERDAM | NETH |
| JAN VAN PARADIJS | UNIV. OF AMSTERDAM | NETH |
| JOCHEN GREINER | AI POTSDAM | GERMANY |
| ATSUMASA YOSHIDA | RIKEN | JAPAN |
| CHIKO OTANI | RIKEN | JAPAN |
| FUYUKI TOKANAI | RIKEN | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)GRB 970616 | 3 | 19.7000 | -5.4517 | 40 ks | N | N | P | 0.00100 | 1 |