Undulated Shock Surface Formed After a Shock–Discontinuity Interaction

Shock ripples and shock–discontinuity interactions (SDIs) have long been proposed to explain the frequent occurrence of high-speed jets (HSJs) in magnetosheath; however, there is no direct observational evidence for either them occurring near a shock. Herein, we report large-scale, long-duration undulated quasi-perpendicular shock surface that capable generating HSJs. Based on curvatures estimated undulation nearby hot flow anomaly (HFA), suggest ripple mechanism SDI combine generate HSJs, is, during an SDI, undulations upstream HFA form simultaneously, solar wind between deflected by into jets. The discontinuity, are then convected downstream. An HSJ consistent with our another event presented.