论文标题
M87*的EHT 2017图像的喷射基本碱基发射模型
A Jet-Bases Emission Model of the EHT 2017 Image of M87*
论文作者
论文摘要
我们执行一般相对论的射线追踪辐射转移计算，以研究在喷气漏斗中停滞表面上产生的局部排放量是否从$ e^{\ pm} $等离子体中产生的质等离子体，我们将其称为停滞环，可以将其称为播放圈，可以解释M87的戒指图像。通过黑洞（BH）重力通过强挠度形成的环图像，我们称之为“准光子环”。对于具有BH旋转$ a_* = 0.99 $的模型，反射流和准光子环的直接图像几乎是光子环的直径$ \ sim $ \ sim40μ{\ rm as} $一致的，而接近的喷气机显示了它们内部的小环形图像。假设EHT 2017阵列的合成观察图像与M87中观察到的阵列一致，因为该阵列有点稀疏以检测内环图像。这表明M87中的环图像除了光子环外还可能包含射流底座的重要特征。我们发现，即将进行的EHT观察可以解决停滞形式的图像，并可能使我们能够探索血浆注射机制到喷气漏斗中。
We carry out general relativistic ray-tracing radiative-transfer calculations to study whether a localized emission from $e^{\pm}$ plasma rings created at the stagnation surface in the jet funnel, to which we refer as stagnation rings, can explain the ring image of M87 observed by Event Horizon Telescope (EHT) 2017. The resultant images consist of the direct image of the stagnation rings and the ring images formed via the strong deflection by the black-hole (BH) gravity, to which we refer as "quasi photon-ring". For the model with the BH spin $a_* = 0.99$, the direct image of the counter-jet and quasi photon-ring are almost coincident to the photon ring with diameter $\sim 40 μ{\rm as}$, while the approaching jet shows the small ring-image inside them. The synthetic observation image assuming the EHT 2017 array is consistent with that observed in M87, because the array is a bit sparse to detect the inner ring image. This indicates that the ring image in M87 might contain the important feature of the jet bases in addition to the photon ring. We find that forthcoming EHT observations can resolve the stagnation-ring image and may enable us to explore the plasma-injection mechanism into the jet funnel.
