Research progress based on observations of the New Vacuum Solar Telescope
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https://doi.org/10.1007/s11431-019-1463-6
Research progress based on observations of the New Vacuum Solar Telescope YAN XiaoLi1,2* , LIU Zhong1,2, ZHANG Jun3 & XU Zhi1,2 1 Yunnan
Observatories, Chinese Academy of Sciences, Kunming 650216, China; for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China; 3 Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 2 Center
Received June 14, 2019; accepted October 14, 2019; published online April 24, 2020
The purpose of this paper is to introduce the main scientific results made by the one-meter New Vacuum Solar Telescope (NVST), which was put into commission on 2010. NVST is one of the large aperture solar telescopes in the world, located on the shore of Fuxian lake of Yunnan province in China, aiming at serving solar physicists by providing them with high resolution photospheric and chromospheric observational data. Based on the data from NVST and complementary observations from space (e.g., Hinode, SDO and IRIS, etc), dozens of scientific papers have been published with a wide range of topics concentrating mainly on dynamics and activities of fine-scale magnetic structures and their roles in the eruptions of active-region filaments and flares. The achievements include dynamic characteristics of photospheric bright points, umbral dots, penumbral waves, and sunspot/light bridge oscillation, observational evidence of small-scale magnetic reconnection, and fine-scale dynamic structure of prominences. All these new results will shed light on the better understanding of solar eruptive activities. Data release, observation proposals, and future research subjects are introduced and discussed. sunspots, solar flares, solar filaments/prominences, jets, Ellerman bombs, magnetic reconnection Citation:
Yan X L, Liu Z, Zhang J, et al. Research progress based on observations of the New Vacuum Solar Telescope. Sci China Tech Sci, 2020, 63, https://doi.org/10.1007/s11431-019-1463-6
1 Introduction of observational systems NVST is a vacuum solar telescope with a 985 mm clear aperture located at the Fuxian Solar Observatory of the Yunnan Observatories [1]. The main instruments include the highresolution multi-channel imaging system [2] and the high dispersion multi-wavelength spectrograph [3, 4]. The two systems have identical focus and are arranged to be perpendicular to each other. The multi-wavelength spectrograph can observe two chromospheric lines Hα 656.3 nm and Ca II 854.2 nm, and one photospheric line Fe I 5324, simultaneously. In this paper, we only focus on the imaging system. The working wavelengths and the main properties of each channel are *Corresponding author (email: [email protected])
summarized below. 1.1 High resolution multi-channel imaging system The imaging system comprises five channels, i.e., two broadband interference filter channels and three narrow-band Lyot filter channels. The working wavelengths and the main properties of each channel
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