论文标题
建模M87喷气机的内部：与理论对抗喷气形态
Modeling the inner part of M87 jet: confronting jet morphology with theory
论文作者
论文摘要
黑洞吸积系统中喷气机的形成是一个长期存在的问题。已经提出，可以通过提取黑洞（“ BZ-JET”）或积聚流（“磁盘 - 射流”）的旋转能来形成射流。尽管这两种模型都可以产生准论的相对论流出，但都没有成功地解释了观察到的喷气形态。在本文中，通过采用一般的相对论磁性水力动力学模拟，并考虑了由射流脉动不稳定性驱动的磁重新连接加速的非热电子，我们通过辐射转移计算获得了图像，并将它们与M87中射流的毫米观察结果进行了比较。我们发现，BZ-JET起源于高旋转黑洞周围的磁性磁盘可以很好地再现喷气形态，包括其宽度和肢体吹捧的特征。
The formation of jets in black hole accretion systems is a long-standing problem. It has been proposed that a jet can be formed by extracting the rotation energy of the black hole ("BZ-jet") or the accretion flow ("disk-jet"). While both models can produce collimated relativistic outflows, neither has successfully explained the observed jet morphology. In this paper, by employing general relativistic magnetohydrodynamic simulations, and considering nonthermal electrons accelerated by magnetic reconnection driven by kink instability of the jet, we have obtained images by radiative transfer calculations and compared them to millimeter observations of the jet in M87. We find that the BZ-jet originated from a magnetically arrested disk around a high-spin black hole can well reproduce the jet morphology, including its width and limb-brightening feature.
