Coronal X-Ray Jets Observed with the Yohkoh Soft X-Ray Telescope.

The soft X-ray telescope (SXT) aboard the Yohkoh spacecraft has revealed coronal X-ray jetsassociated with small flares in X-ray bright points (XBPs), emerging flux regions (EFRs), and active regions (ARs). These observations of X-ray jets are reviewed mainly from a morphological perspective. In particular, various observational evidence of magnetic reconnection in X-ray jets is discussed. It is suggested that magnetic reconnection between emerging magnetic flux and the coronal magnetic field is a key physical process for producing these jets.