标题： 黑洞周围盘和冕相互作用的热传导效应 显示英文标题

标题： The effect of heat conduction on the interaction of disk and corona around black holes

摘要： 热传导在许多天体物理对象的加热与冷却平衡中起着重要作用，例如星系团中的冷却流。 在此我们研究了热传导对黑洞周围冷盘与热日冕相互作用的影响。 利用单一径向区域近似法，我们研究了盘状日冕的垂直结构，并推导出各种减少热传导率下的蒸发速率和日冕质量流量。 我们发现较低的蒸发速率以及蒸发最大值向较小半径的偏移。 这意味着光谱状态转换发生在较低的质量流量和更靠近黑洞的盘面截断处。 热传导的减少被认为是磁性引起的，并且可能因磁场的不同配置而在不同物体间有所不同。 显示英文摘要

摘要： Heat conduction plays an important role in the balance between heating and cooling in many astrophysical objects, e.g. cooling flows in clusters of galaxies. Here we investigate the effect of heat conduction on the interaction between a cool disk and a hot corona around black holes. Using the one-radial-zone approximation, we study the vertical structure of the disk corona and derive evaporation and coronal mass flow rates for various reduced thermal conductivities. We find lower evaporation rates and a shift in the evaporation maxima to smaller radii. This implies that the spectral state transition occurs at a lower mass flow rate and a disk truncation closer to the black hole. Reductions of thermal conductivity are thought to be magnetically caused and might vary from object to object by a different configuration of the magnetic fields.