Possible Signatures of a Termination Shock in the 2014 March 29 X-class Flare Observed by IRIS

The CSHKP "standard" model envisions a standing shock wave forming at the output of the reconnection exhaust. Many cartoons in this Archive illustrate this, for example this early view. Grossly approximating the physics, this model therefore sort of predicts the existence of a radio spectrogram feature resembling a stationary type II burst, not often reported but perhaps there sometimes. The point this rather straightforward and nicely drawn cartoon wants to illustrate is that perhaps one could detect the reconnection outflows as they swerved around the shock blockage, via Doppler shifts of EUV lines as seen by IRIS imaging spectroscopy, for example. Maybe.