Modelling interaction of relativistic and non-relativistic winds in binary system PSR B1259-63/SS2883 - I. Hydrodynamical limit

被引:114
作者
Bogovalov, S. V. [1 ]
Khangulyan, D. V. [2 ]
Koldoba, A. V. [3 ]
Ustyugova, G. V. [4 ]
Aharonian, F. A. [2 ,5 ]
机构
[1] Moscow Engn Phys Inst, Moscow 115409, Russia
[2] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[3] RAS, Inst Math Modelling, Moscow 117901, Russia
[4] RAS, MV Keldysh Appl Math Inst, Moscow 117901, Russia
[5] Dublin Inst Adv Studies, Dublin 4, Ireland
关键词
hydrodynamics; shock waves; methods : numerical; binaries : close; pulsars : general; pulsars : individual : PSR B1259-63;
D O I
10.1111/j.1365-2966.2008.13226.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper, we present a detailed hydrodynamical study of the properties of the flow produced by the collision of a pulsar wind with the surrounding in a binary system. This work is the first attempt to simulate interaction of the ultrarelativistic flow (pulsar wind) with the non-relativistic stellar wind. Obtained results show that the wind collision could result in the formation of an 'unclosed' (at spatial scales comparable to the binary system size) pulsar wind termination shock even when the stellar wind ram pressure exceeds significantly the pulsar wind kinetic pressure. Moreover, the post-shock flow propagates in a rather narrow region, with very high bulk Lorentz factor (gamma similar to 100). This flow acceleration is related to adiabatic losses which are purely hydrodynamical effects. Interestingly, in this particular case, no magnetic field is required for formation of the ultrarelativistic bulk outflow. The obtained results provide a new interpretation for the orbital variability of radio, X-ray and gamma-ray signals detected from binary pulsar system PSR B1259-63/SS2883.
引用
收藏
页码:63 / 72
页数:10
相关论文
共 54 条
  • [51] Magnetocentrifugally driven winds: Comparison of MHD simulations with theory
    Ustyugova, GV
    Koldoba, AV
    Romanova, MM
    Chechetkin, VM
    Lovelace, RVE
    [J]. ASTROPHYSICAL JOURNAL, 1999, 516 (01) : 221 - 235
  • [52] Interaction of a magnetized pulsar wind with its surroundings - MHD simulations of pulsar wind nebulae
    van der Swaluw, E
    [J]. ASTRONOMY & ASTROPHYSICS, 2003, 404 (03) : 939 - 947
  • [53] Three-dimensional hydrodynamic simulations of asymmetric pulsar wind bow shocks
    Vigelius, M.
    Melatos, A.
    Chatterjee, S.
    Gaensler, B. M.
    Ghavamian, P.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 374 (03) : 793 - 808
  • [54] WATERS LBFM, 1988, ASTRON ASTROPHYS, V198, P200