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.
Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607-8471, Japan. shibata@kwasan.kyoto-u.ac.jp
Kazunari
K
Shibata
Tahei
T
Nakamura
Takuma
T
Matsumoto
Kenichi
K
Otsuji
Takenori J
TJ
Okamoto
Naoto
N
Nishizuka
Tomoko
T
Kawate
Hiroko
H
Watanabe
Shin'ichi
S
Nagata
Satoru
S
Ueno
Reizaburo
R
Kitai
Satoshi
S
Nozawa
Saku
S
Tsuneta
Yoshinori
Y
Suematsu
Kiyoshi
K
Ichimoto
Toshifumi
T
Shimizu
Yukio
Y
Katsukawa
Theodore D
TD
Tarbell
Thomas E
TE
Berger
Bruce W
BW
Lites
Richard A
RA
Shine
Alan M
AM
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