Small-scale X-Ray/EUV jets seen in hinode XRT and TRACE

We present the morphological and kinematic characteristics of three small-scale X-ray/EUV jets simultaneously observed by the Hinode XRT and the TRACE. For this, we examined all XRT movies with a thin A1/Poly filter from 2006 October 20 to 2007 April 8, and then found 34 small-scale eruptions. We next took a look at the corresponding TRACE 171/195 Å images associated with the eruptions. As a result, we found three simultaneous X-ray and EUV jets. For two different bands, they have similar characteristics in terms of the projected speed (90-310 km s-1), lifetime (100-2000s), and size (1.1-5 × 105km). These characteristics are similar to the previous results by the Yohkoh SXT, but are quite different from EUV jets associated with Ha surges. From the EUV Imaging Spectrometer, four spectral lines for the last event, we found blueshift (up to -64 km s-1) and redshift (up to 20 km s-1) motions as well as nonthermal velocities ranging from 57 to 106 km s-1 at the jet footpoint. We note a tendency: the hotter the maximum ionization temperature is, the smaller the area of blueshift region is. These characteristics are consistent with a typical jet model that includes the magnetic reconnection between open coronal fields and emerging magnetic fields. © 2007. Astronomical Society of Japan.