Simulations of quasi-periodic oscillations in accreting white dwarfs

被引：10
作者：
Wu, KW
Pongracic, H
Chanmugam, G
Shaviv, G
机构：
[1] LOUISIANA STATE UNIV,DEPT PHYS & ASTRON,BATON ROUGE,LA 70803
[2] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL
[3] TECHNION ISRAEL INST TECHNOL,ASHER SPACE RES INST,IL-32000 HAIFA,ISRAEL
来源：
PUBLICATIONS ASTRONOMICAL SOCIETY OF AUSTRALIA | 1996年 / 13卷 / 01期
关键词：
accretion; accretion disks; shock waves; stars; binaries; close; white dwarfs;
D O I：
10.1017/S1323358000020609
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The stability of accretion shocks in magnetic white dwarfs is investigated. Shock oscillations are simulated numerically, and in the simulations bremsstrahlung and cyclotron cooling are considered in an explicit form. We have found that for shocks with magnetic fields lower than 10 MG, shock oscillations can be sustained; while for magnetic fields greater than 20 MG, the oscillations are suppressed.
引用
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页码：93 / 96
页数：4
相关论文
共 26 条
[1]   THE ACCRETION HALO IN AM HERCULIS SYSTEMS [J].
ACHILLEOS, N ;
WICKRAMASINGHE, DT ;
WU, KW .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 256 (01) :80-96
[2]   CHANGES OF ACCRETION SPOT LONGITUDE IN ECLIPSING AM HERCULIS BINARIES [J].
BAILEY, J ;
WICKRAMASINGHE, DT ;
FERRARIO, L ;
HOUGH, JH ;
CROPPER, M .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1993, 261 (04) :L31-L34
[3]  
CHANMUGAM G, 1992, ANNU REV ASTRON ASTR, V30, P143
[4]   TIME-DEPENDENT ACCRETION ONTO MAGNETIC WHITE-DWARFS - EFFECTS OF CYCLOTRON EMISSION [J].
CHANMUGAM, G ;
LANGER, SH ;
SHAVIV, G .
ASTROPHYSICAL JOURNAL, 1985, 299 (02) :L87-L91
[5]  
CHANMUGAM G, 1993, ANN ISRAEL PHYS SOC, V10, P230
[6]   LINEAR-ANALYSIS OF AN OSCILLATORY INSTABILITY OF RADIATIVE SHOCK-WAVES [J].
CHEVALIER, RA ;
IMAMURA, JN .
ASTROPHYSICAL JOURNAL, 1982, 261 (02) :543-549
[7]  
CLARK G, 1983, APJ, V264, P575
[8]  
CROPPER M, 1990, SPACE SCI REV, V54, P195, DOI 10.1007/BF00177799
[9]   THE QUASI-PERIODIC OSCILLATIONS OF VV PUPPIS [J].
IMAMURA, JN ;
MIDDLEDITCH, J ;
SCARGLE, JD ;
STEIMANCAMERON, TY ;
WHITLOCK, LA ;
WOLFF, MT ;
WOOD, KS .
ASTROPHYSICAL JOURNAL, 1993, 419 (02) :793-802
[10]   A NUMERICAL STUDY OF THE STABILITY OF RADIATIVE SHOCKS [J].
IMAMURA, JN ;
WOLFF, MT ;
DURISEN, RH .
ASTROPHYSICAL JOURNAL, 1984, 276 (02) :667-676
123