RUI: Coronal Heating Studies at the 1999 and 2001 Total Solar Eclipses

摘要：提案题目：1999年和2001年日全食的日冕加热研究首席研究员：Jay M. Pasachoff， Williams College研究人员将测试通过弱压缩磁流体动力波解释日冕加热的机制。主要工作是利用日全食期间的高时间分辨率日冕观测，探索日冕振荡的时空光谱，以区分驻波和传播波。在1999年的日食中，观测与TRACE航天器协调，TRACE航天器具有更高的空间分辨率，但时间分辨率较低。在2001年非洲日食期间也将进行观测。这次日食将发生在太阳活动周期的高峰附近，形成比平时更多、更亮的圆环，可供研究。研究人员还将利用他们的数据，通过研究紫外线波长下高度校准的日冕CCD图像的比例，绘制出日冕的温度图。在第三个项目中，通过与SOHO航天器上的EIT和LASCO小组的安排，研究人员获得了与现已失效的LASCO C1日冕仪的场和通带相匹配的数据。这些数据允许对以前使用EIT和LASCO仪器进行的相关研究进行重要的扩展。

Abstract: ATM 00-00575Proposal Title: Coronal Heating Studies at the 1999 and 2001 Total Solar EclipsesPrincipal Investigator: Jay M. Pasachoff, Williams College The investigators will test proposed mechanisms to explain the heating of the solar corona via weakly compressive magnetohydrodynamic waves. The main effort is to use high time resolution observations of the solar corona taken during total eclipses to explore the spatial and temporal spectra of coronal oscillations in order to distinguish standing and propagating waves. In the 1999 eclipse, observations were coordinated with the TRACE spacecraft, which has higher spatial, but lower temporal resolution. Observations will also be conducted during the 2001 eclipse in Africa. This eclipse will occur near the peak of the solar activity cycle, making more loops, and brighter loops, than usual available for study. The investigators will also use their data to map the temperature of the solar corona by studying ratios of highly calibrated CCD images of the corona at ultraviolet wavelengths. In a third project, by arrangement with the EIT and LASCO groups on the SOHO spacecraft, the investigators have obtained data to match the field and passband of the now-defunct LASCO C1 coronagraph. These data permit an important extension of the previous correlative studies using the EIT and LASCO instruments.