Beta Boötis the ROSAT satellite was used to observe an X-ray flare on Beta Boötis, which released an estimated . This was the first such observation for a low-activity star of this type. The flare may be explained by an as yet unobserved M-type dwarf companion star. Beta Boötis Beta Boötis (β Boötis, abbreviated Beta Boo, β Boo), also named Nekkar, is a star in the northern constellation of Boötes. It has an apparent visual magnitude of 3.5, making it one of the brighter members of the constellation. In the modern constellation, it marks the head of Boötis the herdsman. Based upon
The Herdsman to the United States to inherit his assets. However, the junior Xu is very distant with his father. More than 30 years ago, the father had abandoned his wife and son to do business in America. His mother died of disease and Xu becomes an orphan. After graduating from high school, Xu became a teacher. In 1957, he was classified as a "rightist" and sent to work in a ranch in the underdeveloped northwest. In 1962, when the labor penalty was terminated, Xu stayed at the ranch as a herdsman. Due to despair, Xu even attempted to commit suicide. But