Coronal Loops Oscillation Characteristics And Precise Measurement Of Alfvén Speed

Coronal loops and arched structure is considered to be the basic structure of the sun.With the improvement of observing equipment,the various waves and oscillations observed in the corona have opened up a new path for the development of coronal seismology.One of the coronal loop oscillation is one of the important tools of coronal seismology measurement technology.The basic model of coronal oscillations is constantly improving and more accurate.Coronal seismology uses waves and oscillations observed in the corona to estimate parameters that are difficult to directly measure in coronal plasma,such as magnetic coronal seismology,which is used to determine the attenuation mechanism of the coronal loop,and to measure the magnetic field,Alfvén velocity,density elevation,and transverse structures.Due to the many types of oscillations of the corona and different oscillatory types that exhibit different characteristics,it is important to be able to determine the coronal model and the wave pattern from the observed data.The triggering mechanism of the corona is also of widespread concern.The main purpose of this paper is to introduce the research theory and observation development of coronal concussion decay in recent decades,and its application in coronal seismology and the latest theoretical research of coronal shock.In this paper,the coronal loop oscillation caused by a flare eruption,the application of energy conservation law to solve the Alfven speed of inside coronal loop.