SUMMARY OF PROPOSAL 53009
UNIVERSITY OF LEICESTER
UK LE14 2HB
LEICESTER
UNIVERSITY ROAD
Tel: +44 116 252 3553 Fax: +44 116 252 3311
Medium: 4GBDAT
Subject: CATACLYSMIC VARIABLES
X-RAY SPECTROSCOPY OF A SAMPLE OF WEAK-FIELD CATACLYSMIC VARIABLES
ABSTRACT
We propose to observe a sample of cataclysmic variables with weak magnetic fields in order to determine their detailed X-ray spectra and thus to test the validity of standard models, developed on the basis of low spectral resolution observations of a very few bright CVs. Recent observations of weak-field CVs, and our own ASCA programme, demonstrate the problems with present models and make it unclear whether the properties of the brightest systems are typical of the whole class. Our understanding of weak-field CVs can only be placed on a firm footing by obtaining high quality hard X-ray spectra from a wide sample of objects, a programme to which ASCA is ideally suited.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| JULIAN OSBORNE | LEICESTER | UK |
| MANABU ISHIDA | ISAS | JAPAN |
| ROSEN SIMON | LEICESTER | UK |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)WW CET | 1 | 2.8529 | -11.4789 | 20 ks | N | N | P | 0.45000 | 1 |
| 2)SU UMA | 1 | 123.1175 | 62.6064 | 20 ks | N | N | P | 0.50000 | 1 |
| 3)V603 AQL | 1 | 282.2271 | 0.5842 | 20 ks | N | N | P | 0.70000 | 1 |
| 4)Z CAM | 1 | 126.3050 | 73.1111 | 20 ks | N | N | P | 0.60000 | 1 |