标题： GRS 1915+105喷流的动能通量 显示英文标题

标题： The bulk kinetic power of the jets of GRS 1915+105

摘要： 我们计算了银河系超光速源GRS 1915+105动能整体运动中的最小功率值。 这个值远远超过了10倍太阳质量黑洞吸积的爱丁顿光度。 如此大的值严重限制了喷流基部动能光度的可能载体，并倾向于支持由磁场驱动的喷流产生和加速机制，其在喷流基部的磁场强度超过$10^8$高斯。 如果持续足够长的时间以提供所需的动能，Blandford-Znajek过程可以负责提取Kerr黑洞的旋转能量。 这一时间尺度约为一天，意味着该过程必须以稳态而非冲动模式运行。 显示英文摘要

摘要： We calculate the minimum value of the power in kinetic bulk motion of the galactic superluminal source GRS 1915+105. This value far exceeds the Eddington luminosity for accretion onto a black hole of 10 solar masses. This large value severely limits the possible carriers of the kinetic luminosity at the base of the jet, and favours a jet production and acceleration controlled by a magnetic field whose value, at the base of the jet, exceeds $10^8$ Gauss. The Blandford and Znajek process can be responsible of the extraction of the rotational energy of a Kerr black hole, if lasting long enough to provide the required kinetic energy. This time, of the order of a day, implies that the process must operate in a stationary, not impulsive, mode.