我国行星际闪烁观测概述

Overview of IPS observations in China

太阳风及日冕物质抛射(CME)是地球空间环境扰动的主要驱动源,监测和研究太阳风对研究日地物理和进行日地空间环境预报具有重要意义.地基行星际闪烁观测为监测和研究太阳风及行星际空间提供了经济有效的手段.同时,行星际闪烁观测为研究激波、CME等现象的传播路径提供了有效途径,具有重大的科研和应用价值.我国行星际闪烁观测研究开始较晚,始于20世纪90年代.本文对我国行星际闪烁观测研究概况进行综述.

The Sun influences the physical phenomenon of our earth in many ways, especially through the material in the interplanetary space coming from coronal expansion in the form of inhomogeneous plasma flow called solar wind. Solar wind is the main source of the interplanetary medium, which is also the main influence factor of the space weather. Therefore, studying and monitoring the solar wind is of great importance to research the solar-earth environment and to forecast the space weather. Ground-based Interplanetary Scintillation （IPS） observation provides an efficient and economical way to study the solar wind, the random intensity fluctuation of interplanetary plasma and the interplanetary space, where space satellites can＇t reach. The data thus obtained would be extremely useful in examining the shock wave and also the Coronal Mass Ejection （CME）. Interplanetary Scintillation observation with ground based facilities has both scientific research and application value. China started IPS observations fairly late （since 1999）, first with the Miyun Synthesis Radio Telescope, then with some other domestic single dish radio telescopes. After the hard work for nearly two decades, some important progress has been achieved recently.