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Paper: Chromospheric Anemone Jets Observed with Hinode/SOT and Hida Ca II Spectroheliograph
Volume: 454, The 3rd Hinode Science Meeting
Page: 95
Authors: Morita, S.; Shibata, K.; Ueno, S.; Ichimoto, K.; Kitai, R.; Otsuji, K.
Abstract: We present the first simultaneous observations of chromospheric\linebreak “anemone” jets in active regions with the Ca II H broadband filetergram on the Hinode/SOT and with the Ca II K spetroheliogram on the Domeless Solar Telescope (DST) at the Hida Observatory. During coordinated observation period, 9 chromospheric anemone jets were simultaneously observed with the two instruments. These observations revealed: (1) the jets are generated in the low chromosphere because these cannot be seen in Ca II K3, (2) these jets are associated with mixed polarity regions which are either small emerging flux regions or moving magnetic features, (3) the Ca II K line often show red or blue asymmetry in K2/K1 component; the footpoint of the jets associated with emerging flux regions often show red asymmetry (2–16 km s-1), while the one with moving magnetic features show blue asymmetry (∼5 km s-1). The magnetic cancellations were observed at the footpoint of the jets. The canceling rates are of order of 1016 Mx s-1, and the resulting magnetic energy release rate (1.1–10)×1024 erg s-1, with the total energy release (1–13)×1026 erg for the duration of the magnetic cancellations, ∼130 s. These are comparable to the estimated total energy, ∼1026 erg, in a single chromospheric anemone jet.
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