Fig. 5: Schematic of the proposed jet-like corona in the decay phase.

’BH’ stands for Black Hole, and the symbol `star’ represents the coronal region where the X-ray radiation comes from. The corona at height h can be understood as a standing shock where the material flowing through. The Comptonized hard photons (red arrow) from the corona illuminates the accretion disk, resulting in the observed reflection component (green arrow). Panel a, b and c, represents the peak, middle and end of the decay phase, respectively. As the corona contracts towards the black hole (e.g., from panel a to b) with decreasing height, the fitted reflection fraction decreases, which suggests that the bulk motion of the outflowing coronal material (sketched as an upward arrow) gets faster in the deeper gravitational potential well, with the increase of the outflowing velocity ν in units of light speed c. Note that the values of ν are not taken from the spectral fits, but for the sake of depicting faster outflowing corona.