Joint US-CRIMEA Helioseismic Studies of Solar Variability

这项提议是为了调查太阳能研究的两个主要领域。首先是通过应用日震学工具，对我们目前对太阳内部热力学结构和动力学运动的认识有了改进。这一目标将通过持续进行的、专门的观测项目来实现，该项目位于威尔逊山天文台的60英尺太阳塔望远镜上，并通过对该项目已经获得的太阳振荡观测结果的持续分析。第二个目标是建立一个两站地面网络，通过安装一个额外的专用观测系统来观测高度太阳振荡，该系统将位于苏联的克里米亚天体物理天文台。通过第二个台站的安装和运行，PI将促进美国和苏联日震学家之间的强有力合作，并提高我们未来美国观测的科学回报，而不仅仅是我们从威尔逊山观测中获得的回报。对太阳表面运动的观测将转化为对全球太阳振荡模式的频率、旋转和磁感应频裂、振幅和寿命的测量。然后，这些结果将被反向映射成太阳内部声速和角速度作为半径和纬度的函数。

This proposal is to investigate two main areas of solar research. The first is an improvement in our current knowledge of the thermodynamic structure and dynamical motions of the solar interior through the application of the tools of helioseismology. This goal will be reached through the continuation of an on- going, dedicated observing program which is located at the 60- Foot Solar Tower Telescope of the mount Wilson Observatory and through the continued analysis of the observations of solar oscillations which have already been obtained by that program. The second goal is the establishment of a two-station ground- based network for the observation of high-degree solar oscillations through the installation of an additional dedicated observing system, which will be located at the Crimean Astrophysical Observatory in the USSR. Through the installation and operation of this second station the PI will foster a strong collaboration between U.S. and Soviet helioseismologists and enhance the scientific return of our future U.S. observations beyond the return which we would get from the Mt. Wilson observations alone. The observations of the sun's surface motions will be converted into measurements of the frequencies, rotationally and magnetically induced frequency splittings, amplitudes and lifetimes of global solar oscillation modes. These results will then be inverted to map the sun's internal sound speed and angular velocity as functions of radius and latitude.