标题： 高喷流效率和黑洞磁层的模拟 显示英文标题

标题： High Jet Efficiency and Simulations of Black Hole Magnetospheres

摘要： 本文报告了一组日益增长的观测证据，表明许多强大的叶状主导（FR II）射电源可能具有高效率的喷流。 这项研究扩展了费尔南德斯等人（2010）定义的最大效率线（喷流功率$\approx$25倍于热光度），以覆盖喷流功率四个数量级的范围。 这条线覆盖了整个FR II射电功率范围的事实，强烈表明这是喷流产生的一种基本属性，与吸积功率无关。 这对理论学家来说是一个有价值的约束条件。 例如，目前流行的“无净通量”黑洞吸积数值模型产生的喷流强度比最大效率附近的源弱2到3个数量级，无法保持一致。 显示英文摘要

摘要： This article reports on a growing body of observational evidence that many powerful lobe dominated (FR II) radio sources likely have jets with high efficiency. This study extends the maximum efficiency line (jet power $\approx$ 25 times the thermal luminosity) defined in Fernandes et (2010) so as to span four decades of jet power. The fact that this line extends over the full span of FR II radio power is a strong indication that this is a fundamental property of jet production that is independent of accretion power. This is a valuable constraint for theorists. For example, the currently popular "no net flux" numerical models of black hole accretion produce jets that are 2 to 3 orders of magnitude too weak to be consistent with sources near maximum efficiency.