2009 Fiscal Year Final Research Report
Study of Dynamical Phenomena in the Solar Chromosphere using Two-Dimensional Spectro-Polarimetric Observations
| Project/Area Number |
19340049
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
SUEMATSU Yoshinori National Astronomical Observatory of Japan, 太陽天体プラズマ研究部, 准教授 (50171111)
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| Co-Investigator(Kenkyū-buntansha) |
ICHMOTO Kiyoshi 京都大学, 大学院・理学研究科, 教授 (70193456)
MIYASHITA Masakuni 国立天文台, 太陽天体プラズマ研究部, 研究技師 (50209904)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 太陽物理学 / 彩層 / 2次元分光 / 偏光 / 磁気流体現象 |
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| Research Abstract |
We developed a two-dimensional spectro-polarimetoric observation method to detect unsolved chromospheric jets and heating phenomena effectively and to derive their physical parameters, particularly the magnetic and velocity fields, as accurately as possible. Using observational data coordinated with other ground-based instruments and the solar observing satellite Hinode, we newly revealed that the jets have a large line-of-sight velocity and often twin structure and uni-polar magnetic elements at their feet show vortex and encountering motion. Our results suggest a new type of magnetic reconnection mechanism in the chromospheres and its contribution to the chromospheric heating.
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[Journal Article] Hinode Observation of the Magnetic Fields in a Sunspot Light Bridge Accompanied by Long-Lasting Chromospheric Plasma Ejections2009
Author(s)
Shimizu, T., Katsukawa, Y., Kubo, M., Lites, B.W., Ichimoto, K., Suematsu, Y., et. al.
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Journal Title
Peer Reviewed
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[Journal Article] Estimation of Spicule Magnetic Field Using Observed MHD Waves by the Hinode SOT2008
Author(s)
Kim, Y.-H., Bong, S.-C., Park, Y.-D., Cho, K.-S., Moon, Y.-J., Suematsu, Y.
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Journal Title
J. of Korean Astro. Soc. 41
Pages: 173-180
Peer Reviewed
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