SUMMARY OF PROPOSAL 51061
SAITAMA JAPAN 351-01
Tel: 048-462-1111 X3229 Fax: 048-462-4640
Subject: X-RAY BINARIES
A NEW X-RAY NOVA GRS 1739-278 : THIRD TRANSIENT JET SYSTEM?
ABSTRACTGRS 1739-278 is a new X-ray nova discovered in Mar. 1996. Forty days after the onset of the X-ray outburst, a radio outburst was observed. Such delayed radio outburst is peculiar to transient jet systems like GRO J1655-40 or GRS 1915+105. Therefore, GRS 1739-278 is suspected to be third transient jet source. If it is a jet system, resonance absorption lines or Doppler-shifted emission lines are expected to be found, as the cases of other ASCA observations of jet systems. We propose a simultaneous observation of GRS 1739-278 with radio to explore its nature. This observation would test the anti-correlation of the X-ray and the radio emission, which is predicted by a jet-supression scenerio, and would be a clue to the mechanism of the resonance absorption detected in the jet systems.
|CO-I NAME ||INSTITUTE ||COUNTRY |
| ROBERT HJELLMING||NRAO||USA|
| RICHARD HUNSTEAD||UNIV. OF SYDNEY||AUSTRALIA|
| HAJIME IOUE||ISAS||JAPAN|
| WALTER LEWIN||MIT||USA|
| TOSHIAKI TAKESHIMA||NASA/GSFC||USA|
| YASUO TANAKA||MPIE||GERMANY|
| YOSHIHIRO UEDA||ISAS||JAPAN|
| KINWAH WU||UNIV. OF SYDNEY||AUSTRALIA|
| FUMIAKI NAGASE||ISAS||JAPAN|
|TARGET NAME||PRI||RA||DEC||TIME||TC||OFF||GIS||SIS CNT||OBS|
|1)GRS 1739-278|| 2||265.5000||-27.7480|| 40 ks||N||Y||P||700.00000||1|
TARGET 1700 C/S IS THE VALUE AT HIGH STATE.