A Comparison Between Cool Chromospheric and Hot Coronal Jets

Spicules and jets occur in a typical emerging magnetical collimated flux tube, and we examine polar surges through limb observations in two wavelengths, revealing a more distinct view of the dynamic events high above the polar cap’s chro-mosphere. Magnetic flux tube plays a key role and a wide range of jet-like activities in the solar atmosphere. The observational characteristics of these mass ejections are reviewed, and unified model based on magnetic reconnection or other alternative is presented to account for these different plasma ejections. Several excellent time se-quences of images were taken with the Hinode Solar Optical Telescope (SOT) through the HCaII K and Hα line broadband filter and also X-Ray Telescope (XRT) with high spatial and temporal resolution was used. Image processing include the use of a mad-max operator is used to reveal and improve the visibility of hair-like futures (especially for chromospheric small-scale anemone jets) and to a specific plasma motion in the vicinity of the X-null point. The intensive and rapid temporal observations imply a tight connection between Surges and similar jet-like phenomena, corroborating the theory that the acceleration and upward movement of these events are propelled by magnetic reconnection triggered by the emergence of flux.