论文标题

磁场对中子星周围辐射压力支配的圆盘的影响

Effects of magnetic field on the radiation pressure dominated discs around neutron stars

论文作者

Bhattacharjee, Snehasish

论文摘要

我们补充了Matthews O. M.等。 Al。,2005,mnras,\ textbf {356},66,研究在部署扭矩的恒星磁场的影响下,辐射压力支配的盘子的稳态结构。当恒星的磁场倾向于零,并且在大半径上,溶液将溶液收敛于非磁性Shakura N. I.,Sunyaev R. A.,1973,a \&a,\ textbf {24},337形式。提出了改变质量吸积率和典型中子星对圆盘参数的自旋周期的影响。我们进一步报告,磁校正项的存在$ k $降低了辐射压力和电子散射分别是压力和不透明度的主要来源。我们还报告,磁效应在内盘中几次扩增粘性时间尺度。

We supplement the analytic solution obtained by Matthews O. M., et. al., 2005, MNRAS, \textbf{356}, 66 to investigate the steady-state structure of radiation pressure dominated disc under the influence of a stellar magnetic field which deploys a torque. The solutions converge to the non-magnetic Shakura N. I., Sunyaev R. A., 1973, A\& A, \textbf{24}, 337 form when magnetic field of the star tends to zero and also at large radii. Effects of varying the mass accretion rates and the spin period of a typical neutron star on the disc parameters are presented. We further report that the presence of a magnetic correction term $k$ reduces the radial extent upto which radiation pressure and electron scattering continue to be the major source of pressure and opacity respectively. We also report that magnetic effects amplify the viscous timescale several times in the inner disc.

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