Chromospheric anemone jets as evidence of ubiquitous reconnection.
The heating of the solar chromosphere and corona is a long-standing puzzle in solar physics. Hinode observations show the ubiquitous presence of chromospheric anemone jets outside sunspots in active regions. They are typically 3 to 7 arc seconds = 2000 to 5000 kilometers long and 0.2 to 0.4 arc second = 150 to 300 kilometers wide, and their velocity is 10 to 20 kilometers per second. These small jets have an inverted Y-shape, similar to the shape of x-ray anemone jets in the corona. These features imply that magnetic reconnection similar to that in the corona is occurring at a much smaller spatial scale throughout the chromosphere and suggest that the heating of the solar chromosphere and corona may be related to small-scale ubiquitous reconnection.
Shibata
Kazunari
K
Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607-8471, Japan. shibata@kwasan.kyoto-u.ac.jp
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Matsumoto
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Otsuji
Kenichi
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Okamoto
Takenori J
TJ
Nishizuka
Naoto
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Tomoko
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Hiroko
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Shin'ichi
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Ueno
Satoru
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Kitai
Reizaburo
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Nozawa
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Tsuneta
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Suematsu
Yoshinori
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Ichimoto
Kiyoshi
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Shimizu
Toshifumi
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Katsukawa
Yukio
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Tarbell
Theodore D
TD
Berger
Thomas E
TE
Lites
Bruce W
BW
Shine
Richard A
RA
Title
Alan M
AM