论文标题
双镜头闪烁体：Pulsar B1508+55的可变闪烁
Double-lens Scintillometry: The variable scintillation of pulsar B1508+55
论文作者
论文摘要
我们报告了PSR B1508+55在2020年初至2022年初的Effelsberg 100米望远镜上的观察结果。在2020年秋天，预计Pulsar被预计将在其脉搏轮廓上交叉回声，这是其突然的脉动转变，这是从Pecintaration Arcs从Peculiar peculiar peculiar peculiar peculiar peculiar peculiar periquil parabily parabily parabily arc carbabily arc arc carabily arc arc arc arc arc arc arc arc arc arc arc carabily the。为了推断散射的几何模型，我们测量了地球年度速度曲线的影响，视线的相对运动以及在第二个散射屏幕上的点投影，并开发出新的方法来做到这一点。后一种现象是通过这项研究发现的，并强烈表明了两屏的散射几何形状。我们得出了一个分析性的两屏模型，并在马尔可夫链蒙特卡洛分析中证明了它可以通过解释图像相对振幅的变化以及各向异性方向的变化来成功地应用于解释观测值。我们在这里证明的方法的收集可以转移到其他脉冲星，具有强烈改善散射模型的约束。
We report on observations of PSR B1508+55's scintillation at the Effelsberg 100-m telescope spanning from early 2020 to early 2022. In the autumn of 2020, close to the time the pulsar was predicted to cross echoes in its pulse profile, a sudden transition in the scintillation arcs from peculiar stripe-like features to parabolic arclets was observed. To infer a geometric model of the scattering we measure the effects of the annual velocity curve of Earth, of the relative movement of the line of sight, and of the projection of points on a second scattering screen and develop novel methods to do so. The latter phenomenon was discovered by this study and strongly indicates a two-screen scattering geometry. We derive an analytical two-screen model and demonstrate in a Markov Chain Monte Carlo analysis as well as simulations that it can be successfully applied to explain the observations by interpreting the transition as a change of relative amplitudes of images as well as a shift in the orientation of anisotropy. The collection of methods we demonstrate here is transferable to other pulsars with the potential to strongly improve constraints on scattering models.
