What is Yao Xing?

Yaoxing refers to a special variable star whose brightness suddenly brightens in a few seconds to dozens of seconds, and then slowly recovers in ten minutes or dozens of minutes. Their brightness is basically unchanged at ordinary times, and some brightness can be increased to more than 100 times when it increases. However, this brightness can only last for ten to dozens of minutes, and it looks like a flash, hence the name Yaoxing. The speed of light change of Yaoxing even exceeds that of supernovae.

At 1924, this phenomenon was found in the carina of DH star. 1924 It was found that the brightness of UV stars in Ceylon increased by 1 1 times in three minutes. The most observed is the Yao star near the sun. Proxima centauri is a shining star. Yaoxing is also found in the Cluster Association, and the Pleiades cluster has the largest number of 460 stars. Orion is the second largest nebula with more than 300 stars. Most Yaoxing stars are tiny and cold red dwarfs with low luminosity and short luminous time, so only Yaoxing stars close to the sun can be recognized by us. However, the actual number of Yaoxing is very large. If you observe with a large telescope, you can see the brilliance every 90 minutes on average. It is estimated that about 80%~90% of the stars in the Milky Way can be classified as brilliance. There are local active areas on the surface of Yaoxing, and strong light appears in these areas, which can appear many times in the same area, similar to solar flare activity, but the radiation energy is 100~ 1000 times larger than solar flare.