论文标题
部分可观测时空混沌系统的无模型预测
Sustained FU Orionis-type outbursts from colliding discs in stellar flybys
论文作者
论文摘要
我们对具有蒙特卡洛辐射转移的迪斯盘恒星飞行片进行了3D流体动力学模拟。我们表明，这两颗星周围的偶然性光盘会导致快速上升（$ \ sim $ yrs）爆发的爆发时间比星盘飞行比的长度长2-5倍。 Perturber总是进入爆发（$ \ dot {m}> 10^{ - 5}〜{\ rm m _ {\ odot} 〜yr^{ - 1}} $）。而我们发现只有在逆行旋转圆盘旋转时，主要的爆发才能爆发数十年。爆发期间的高积聚率是由遭遇产生的未对准材料的角动量取消引发的。大部分的积聚材料是陌生的。
We perform 3D hydrodynamics simulations of disc-disc stellar flybys with on-the-fly Monte Carlo radiative transfer. We show that pre-existing circumstellar discs around both stars result in fast rising ($\sim$yrs) outbursts lasting 2-5 times longer than for a star-disc flyby. The perturber always goes into outburst ($\dot{M}>10^{-5}~{\rm M_{\odot}~ yr^{-1}}$). Whereas we find that the primary goes into a decades long outburst only when the flyby is retrograde to the circumprimary disc rotation. High accretion rates during the outburst are triggered by angular momentum cancellation in misaligned material generated by the encounter. A large fraction of accreted material is alien.
