论文标题
倾斜偶极磁层的惯性振荡模式，作为X射线脉冲星中带限值噪声的来源
Inertial oscillation modes of an inclined dipolar magnetosphere as a source of band-limited noise in X-ray pulsars
论文作者
论文摘要
强烈磁化恒星的磁场可能由于冻结条件而捕获物质。在无力度方向上，可以在“电线上的珠子”近似中考虑物质沿田间线的运动。这种运动，如果考虑重力和离心力，则具有平衡点，其中一些是稳定的。在大多数情况下，在可能的位置的大约几个可能的位置中，稳定性是可能的。相应的振荡频率跨越了自旋频率的零到$ \ sqrt {3} $的范围。我们建议在爆发期间，在某些X射线脉冲星中可能会激发这种可变性模式，并在功率密度频谱中的断裂频率附近创建峰值的宽带噪声组件，并在此频率范围内产生一些准周期性振荡特征。这种可变性的存在不需要任何变化的质量积聚率，并且仅涉及少量物质因互换不稳定性而导致的磁盘和磁流渗透。
Magnetic fields of strongly magnetized stars can trap conducting matter due to frozen-in condition. In the force-free regime, the motion of the matter along the field lines may be considered in the "bead on a wire" approximation. Such a motion, if gravity and centrifugal forces are taken into account, has equilibrium points, some of which are stable. In most cases, stability is possible in about several per cent of the possible locations. Corresponding oscillation frequencies span the range from zero to $\sqrt{3}$ of the spin frequency. We suggest that this variability mode may be excited in some X-ray pulsars during the outbursts and create the peaked broad-band noise component near the break frequency in the power density spectrum, as well as produce some of the quasi-periodic oscillation features in this frequency range. Existence of this variability does not require any changes in mass accretion rate and involves only a small amount of matter infiltrating from the disc and magnetic flow due to interchange instabilities.
