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Paper: Hinode EIS and XRT Observations of Hot Jets in Coronal Holes - Does the Plasma Escape?
Volume: 397, First Results From Hinode
Page: 23
Authors: Baker, D.; van Driel-Gesztelyi, L.; Kamio, S.; Culhane, J.L.; Harra, L.K.; Sun, J.; Young, P.R.; Matthews, S.A.
Abstract: X-ray jets have been detected in the extreme ultraviolet (EUV) and soft X-ray observations of Hinode’s EIS and XRT instruments. Both instruments were used to observe the jets in polar and on-disk coronal holes (CHs). Here, we present a multi-wavelength study of an X-ray jet and its associated bright point found in an equatorial CH on 19 June 2007. Light curves (LCs) in 22 different emission lines were compared to that of Hinode/XRT. As we found in a previous study of two polar X-ray jets, this jet shows a post-jet increase in its EUV LCs. The post-jet enhancement appears cooler than the jet. We suggest this feature arises because the hot plasma of the jet, having failed to reach escape speeds, cools and falls back along the near vertical paths expected to be created by reconnection with open field lines of CHs. In addition to the increase in post-jet EUV intensity, we found tentative evidence of impact heating possibly caused by the fall-back of plasma.
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