摘要
本文讨论了晚型星的磁场强度与ＲＯＳＡＴ软Ｘ射线的相关性，用四种模型拟合了ＲＯＳＡＴ的观测结果，讨论了各种模型的优缺点，同时发现单星的星冕温度与磁场强度的相关性很好．因此可以认为磁场是晚型星星冕很重要的加热机制．由处理ＲＯＳＡＴ数据得到的星冕温度，可估计晚型星表面的磁场强度．
The correlation between the X-ray emission and the magnetic field in late-type stars is investigated,based on data primarily from the ROSAT PSPC observation.Four coronal models have been considered to fit the sample stars.And a strong correlation between the coronal temperature and the magnetic field in single cool stars is found,we interpret the result as a magnetic heating process.The best fit is achieved with the model of a plasma consisting of two isothermal components with intervening absorption.
基金
国家自然科学基金
关键词
晚型星
X射线
星冕
磁场
相关性
stars—late-type—X-ray—active—magnetic field
