On the Relationship Between Polar Coronal Jets and Plumes

Details On the Relationship Between Polar Coronal Jets and Plumes On the Relationship Between Polar Coronal Jets and Plumes

2009-02-03

arxiv.org/abs/0902.0591v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 2 figure, Proceedings of the Hinode 2 meeting

Scientific paper

We utilize observations from {\emph{Hinode}}/XRT and the Extreme ultraviolet (EUV) imagers onboard {\emph{STEREO}} to study the relationship between coronal jets and plumes. The data were recorded on Apr. 7-8 and Nov. 2-4, 2007. Detailed results are presented for the Apr. campaign along with preliminary analysis of the Nov. observations. We find that $>90%$ of the identified jets are directly related to plumes (Apr. data). EUV data show that plume haze rose from the same spatial location of more than 70% of the identified jets. The remaining jets occurred in areas where plume material exists already. The jet-plume transition is smooth in some cases and delayed by up to several minutes in others. Short-lived, jet-like events and small transient bright points occur at different locations within the base of pre-existing long-lived plumes. The latter are enhanced after the manifestation of jet-like events. The present observations suggest evidence for X-ray jets as precursors of polar plumes and of their brightness changes.

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