Simulations of Gas Flow from a Galactic Disk Towards the Black-Hole Accretion Disk
Simulations of Gas Flow from a Galactic Disk Towards the Black-Hole Accretion Disk
复制标题
气体从银河盘流向黑洞吸积盘的模拟
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
W. Maciejewski
中科院分区：
文献类型：
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作者：
W. Maciejewski
我们报告的初步结果流体动力学模拟的气体流动在星系的潜力对中央大质量黑洞。我们使用一个酒吧般的大尺度上的扰动，以引起初始流入，我们集中我们的注意力在星系的内部部分，在那里的潜力成为轴对称的，或者它是由一个内部，二级酒吧为主。我们的高分辨率基于网格的算法使我们能够获得距离星系中心约10 pc的气体动力学的详细图像，黑洞在那里占据主导地位。我们发现，内部酒吧可能不会增加气体流入，但对于某些潜在的和气体参数，气体流向中心的螺旋激波。
We report preliminary results of hydrodynamical modeling of gas flow in a galaxy potential towards a central massive black hole. We use a bar-like perturbation on the large scale in order to cause the initial inflow, and we concentrate our attention on the inner parts of the galaxy, where the potential becomes axisymmetric, or where it is dominated by an inner, secondary bar. Our high-resolution grid-based algorithm allows us to get a detailed picture of gas dynamics down to about 10 pc from the galaxy center, where the black hole becomes dominant. We find that inner bars may not increase the gas inflow, but for certain potential and gas parameters, gas flows to the center in a spiral shock.