SUMMARY OF PROPOSAL 81301
INSTITUTE OF SPACE AND ASTRONAUTICAL SCIENCE
3-1-1 YOSHINODAI
SAGAMIHARA
KANAGAWA JAPAN 229-8510
Tel: 042-759-8136 Fax: 042-759-8455
Medium: CD ROM
Subject: CATACLYSMIC VARIABLES
ASCA OBSERVATION OF THE OUTBURST CYCLE OF THE DWARF NOVA AB DRA
ABSTRACT
We propose to observe AB Dra, a dwarf nova (DN) with average reccurence time of 13 days, for 750 ks. This will be a unique opportunity to follow the X-ray variations through an outburst cycle of a DN with high time-resolution, high spectral capability of ASCA. We will see from the result of this observation if AB Dra is one in which the hard X-rays (> 0.2 keV) are suppressed during outburst, and gradually decrease over a quiescence. Moreover, with the energy range covered with ASCA we will be able to constrain whether the X-ray generation mechanism changes over the outburst cycle. In any case, this observation is very important in the comparison with the DN outburst theories.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MANABU ISHIDA | ISAS | JAPAN |
| HAJIME INOUE | ISAS | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)AB DRA | B | 297.2788 | 77.7396 | 500 ks | N | N | P | 1.00000 | 1 |