Synoptic solar observations of the Solar Flare Telescope focusing on space weather
Synoptic solar observations of the Solar Flare Telescope focusing on space weather
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太阳耀斑望远镜的天气观测主要关注空间天气
DOI:
10.1051/swsc/2020044
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发表时间:
2020
影响因子:
3.3
通讯作者:
Morita Satoshi
中科院分区:
文献类型:
--
作者:
Hanaoka Yoichiro;Sakurai Takashi;Otsuji Ken’ichi;Suzuki Isao;Morita Satoshi
The solar group at the National Astronomical Observatory of Japan is conducting synoptic solar observation with the Solar Flare Telescope. While it is a part of a long-term solar monitoring, contributing to the study of solar dynamo governing solar activity cycles, it is also an attempt at contributing to space weather research. The observations include imaging with filters for Hα, Ca K, G-band, and continuum, and spectropolarimetry at the wavelength bands including the He I 1083.0 nm/Si I 1082.7 nm and the Fe I 1564.8 nm lines. Data for the brightness, Doppler signal, and magnetic field information of the photosphere and the chromosphere are obtained. In addition to monitoring dynamic phenomena like flares and filament eruptions, we can track the evolution of the magnetic fields that drive them on the basis of these data. Furthermore, the magnetic field in solar filaments, which develops into a part of the interplanetary magnetic cloud after their eruption and occasionally hits the Earth, can be inferred in its pre-eruption configuration. Such observations beyond mere classical monitoring of the Sun will hereafter become crucially important from the viewpoint of the prediction of space weather phenomena. The current synoptic observations with the Solar Flare Telescope is considered to be a pioneering one for future synoptic observations of the Sun with advanced instruments.
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发表时间:
2009
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