TY - JOUR
T1 - Chromospheric running wave from a solar cyclone produced through the emergence of a twisted magnetic flux tube
AU - Magara, Tetsuya
AU - An, Jun Mo
AU - Lee, Hwanhee
AU - Kang, Jihye
AU - Inoue, Satoshi
AU - Choe, Gwangson
PY - 2012/10/25
Y1 - 2012/10/25
N2 - An innovative solar observing satellite, Hinode, has successfully observed the detailed evolution of an emerging magnetic field, starting from its appearance at the solar surface, to forming a developed bipolar region. The high spatial and temporal resolutions provided by the satellite has enabled us to capture prominent dynamic phenomena caused by the emerging magnetic field, such as a running wave in a chromospheric layer and the rotation of a magnetic polarity region on the Sun, which is reminiscent of a cyclone on Earth. A possible mechanism for producing the chromospheric running wave spreading from a solar cyclone has been demonstrated with a three-dimensional magnetohydrodynamic simulation for the emergence of a twisted flux tube. The simulation shows that as the emergence proceeds, an arc-shaped region with enhanced plasma density propagates outwards from the site of emergence.
AB - An innovative solar observing satellite, Hinode, has successfully observed the detailed evolution of an emerging magnetic field, starting from its appearance at the solar surface, to forming a developed bipolar region. The high spatial and temporal resolutions provided by the satellite has enabled us to capture prominent dynamic phenomena caused by the emerging magnetic field, such as a running wave in a chromospheric layer and the rotation of a magnetic polarity region on the Sun, which is reminiscent of a cyclone on Earth. A possible mechanism for producing the chromospheric running wave spreading from a solar cyclone has been demonstrated with a three-dimensional magnetohydrodynamic simulation for the emergence of a twisted flux tube. The simulation shows that as the emergence proceeds, an arc-shaped region with enhanced plasma density propagates outwards from the site of emergence.
KW - Magnetohydrodynamics
KW - Sun: atmospheric motions
KW - Sun: chromosphere
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U2 - 10.1093/pasj/64.5.L4
DO - 10.1093/pasj/64.5.L4
M3 - Article
AN - SCOPUS:84868028185
SN - 0004-6264
VL - 64
JO - Publications of the Astronomical Society of Japan
JF - Publications of the Astronomical Society of Japan
IS - 5
ER -