SUMMARY OF PROPOSAL 81352
UNIVERSITY OF TOKYO
HONGO 7-3-1
BUNKYO-KU
TOKYO JAPAN 113-0033
Tel: 03-5841-4202 Fax: 03-5841-4158
Medium: CD ROM
Subject: CATACLYSMIC VARIABLES
X-Ray Line Beaming in Cataclysmic Variables due to Resonance Scattering
ABSTRACT
Galactic compact objects with extremely strong ionized Fe emission lines, with the equivalent width reaching about 4000 eV, have been discovered with ASCA, including AX~J1842.8$-$0423 and RX~J1802.1+1804.These objects are thought to be binary systems containing magnetized white dwarf (WD). A possible interpretation of the strong Fe-K line is the line-photon beaming in the WD accretion column, due to resonance scattering of line photons augmented by the vertical velocity gradient there. RX J1015.5+0904 has a good geometry for checking how the line equivalent widths of many ion species change as the white dwarf rotates.This object has already show the tendency of an enhancement of He-like Fe K alpha line in pole-on phase, but not so clearly because of luck of photons.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| Manabu ISHIDA | ISAS | JAPAN |
| Kazuo MAKISHIMA | UNIV OF TOKYO | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)RX J1015.5+0904 | A | 153.8950 | 9.0786 | 150 ks | N | N | P | 0.115 | 1 |