M87中喷流准直区的VLBA电影进展
Progress Toward a VLBA Movie of the Jet Collimation Region in M87
摘要：
凭借其高黑洞质量，接近和明亮的喷流，M87为直接成像研究喷流的加速和准直区域提供了最佳前景。以前的VLBI观测显示，在小尺度下，边缘增亮的结构具有宽的张开角。使用现有的VLBA数据在43 GHz下测量该区域的组件速度的尝试给出了0.25c至0.4c的初步结果，但也表明需要更快的采样。在这里，我们提供了一个项目的进展报告，使一个适当的采样电影的运动在内部射流使用VLBA在43 GHz。2006年的一个试点项目测量了大约0.6c的速度，并用于为电影设定3周的帧间隔。2007年1月开始拍摄电影。结果从试点和从第一帧的电影。该项目的目标是提供从100到几百个史瓦西半径范围内的喷流结构和动力学观测结果，这些观测结果可以与理论研究和数值模拟的预期进行比较。
英文摘要：
With its high black hole mass, proximity, and bright jet, M87 provides the best prospect for a direct imaging study of the acceleration and collimation region of a jet. Previous VLBI observations have shown an edge brightened structure with a wide opening angle at small scales. An effort to measure component speeds in this region using existing VLBA data at 43 GHz gave tentative results of 0.25c to 0.4c but also indicated that faster sampling is needed. Here we provide a progress report on a project to make a properly sampled movie of motions in the inner jet using the VLBA at 43 GHz. A pilot project during 2006 measured speeds of about 0.6c and was used to set a frame interval of 3 weeks for the movie. The movie observations began in January 2007. Results from the pilot and from the first frame of the movie are presented. The goal of the project is to provide observations of the structure and dynamics of the jet on scales from under 100 to a few hundred Schwarzschild radii that can be compared with expectations from theoretical studies and numerical modeling.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
