CAJ | 학술논문

针对非轴对称的吸积盘中压力主要为气压的区域,采用一种新的黏滞机制(反常磁黏滞),利用数值方法进行了吸积盘的不稳定性分析.结果表明,当吸积盘无黏滞时,吸积盘的稳定性不受不透明度的影响;随着方位角扰动波数n的增大,热模、黏滞模是越来越不稳定,In-模和Out-模则是越来越稳定;不同的黏滞机制对吸积盘不稳定性存在影响.
침대비축대칭적흡적반중압력주요위기압적구역,채용일충신적점체궤제(반상자점체),이용수치방법진행료흡적반적불은정성분석.결과표명,당흡적반무점체시,흡적반적은정성불수불투명도적영향;수착방위각우동파수n적증대,열모、점체모시월래월불은정,In-모화Out-모칙시월래월은정;불동적점체궤제대흡적반불은정성존재영향.
The non-axisymmetric instability of the gas-pressure-dominated accretion disk is solved by numerical simulations where we adopt a new viscosity prescription (i.e.anomalous-viscosity).The result is that there is little influence of the opacity in the case without viscosity.The thermal mode and viscous mode become more unstable,while I-mode and O-mode become more stable with the increase of the azimuthal perturbation wave number.The results are very different in the different viscosity prescriptions.