New vacuum solar telescope and observations with high resolution

Liu, Zhong; Xu, Jie; Gu, Bozhong; Wang, Sen; You, Jinyuan; Shen, Lingyan; Lu, R. W.; Jin, Zhenyu; Chen, Linfei; Liang, Ke; Li, Zhi; Guangqian, Liu; Xu, Zhi; Rao, Changhui; Hu, Qi-Qian; Li, Rufeng; Fu, Hongyong; Wang, Feng; Bao, Men-Xian; Wu, M. C.; Zhang, Bo-Rong

doi:10.1088/1674-4527/14/6/009

Cited by 281 publications

(189 citation statements)

References 13 publications

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“…Here we use joint observations between IRIS and the Chinese 1 m New Vacuum Solar Telescope (NVST, Liu et al 2014) to examine the possible connection between IBs and EBs. The NVST belongs to a new generation of large and high-technology solar facilities of China and one of the postfocus instruments is the Multi-channel High Resolution Imaging System, including a H , G-band, TiO band, Ca II 8542 Å, and He I 10830 Å wavelengths (Xu et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Are Iris Bombs Connected to Ellerman Bombs?

Tian

et al. 2016

ApJ

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Recent observations by the Interface Region Imaging Spectrograph (IRIS) have revealed pockets of hot gas (∼2-8 × 10 4 K) potentially resulting from magnetic reconnection in the partially ionized lower solar atmosphere (IRIS bombs; IBs). Using joint observations between IRIS and the Chinese New Vacuum Solar Telescope, we have identified 10 IBs. We find that 3 are unambiguously and 3 others are possibly connected to Ellerman bombs (EBs), which show intense brightening of the extended a H wings without leaving an obvious signature in the a H core. These bombs generally reveal the following distinct properties: (1) the O IV 1401.156 Å and 1399.774 Å lines are absent or very weak; (2) the Mn I 2795.640 Å line manifests as an absorption feature superimposed on the greatly enhanced Mg II k line wing; (3) the Mg II k and h lines show intense brightening in the wings and no dramatic enhancement in the cores; (4) chromospheric absorption lines such as Ni II 1393.330 Å and 1335.203 Å are very strong; and (5) the 1700 Å images obtained with the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory reveal intense and compact brightenings. These properties support the formation of these bombs in the photosphere, demonstrating that EBs can be heated much more efficiently than previously thought. We also demonstrate that the Mg II k and h lines can be used to investigate EBs similarly to a H , which opens a promising new window for EB studies. The remaining four IBs obviously have no connection to EBs and they do not have the properties mentioned above, suggesting a higher formation layer, possibly in the chromosphere.

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Section: Introductionmentioning

confidence: 99%

Are Iris Bombs Connected to Ellerman Bombs?

Tian

et al. 2016

ApJ

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117

190

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“…In 2015, Yang et al (2015) and Bharti (2015) independently identified a bright front with TR temperatures ahead of the chromospheric surges above a light bridge. The bright front can be seen in the 1330 and 1400 Å slit-jaw images of IRIS, while the wall-like surges are visible in chromospheric images such as the Hα images taken by the new vacuum solar telescope (NVST, Liu et al 2014) and the 2796 Å slit-jaw images taken by IRIS. Figure 3 shows an example of the surge and the bright front ahead of the surge.…”

Section: Dynamics In the Tr Above Sunspotsmentioning

confidence: 99%

The transition region above sunspots

Samanta

Zhang

2018

Geosci. Lett.

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Over decades, sunspots and their fine structures have been studied in detail at the photospheric level with different ground-based telescopes, as the surface of the Sun primarily emits light in the visible wavelengths. For a very long period, the upper atmosphere above the sunspot regions, especially the transition region (TR) above sunspots where the plasma emits light in the far ultraviolet (FUV) and extreme ultraviolet (EUV), has been poorly understood. In the past decades after the development of space instrumentations, FUV and EUV observations have uncovered many secrets of the TR above sunspots. In this paper, we present a brief review of research results about the TR structures and dynamics obtained through imaging and spectroscopic observations of sunspots in the past ~ 20 years. Though these observations have gathered remarkable and detailed information and greatly improved our understanding of the TR above the sunspots, paradoxically, they leave us with many new questions which should be answered in the future.

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“…The 98.5 cm New Vacuum Solar Telescope (NVST) at Fuxian Lake is a Chinese telescope, which has recently been upgraded for high-resolution observations (Yang et al 2014;Liu et al 2014b). …”

Section: Nvstmentioning

confidence: 99%

Prospects of Solar Magnetometry—From Ground and in Space

Kleint¹,

Gandorfer²

2015

Space Sci Rev

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In this review we present an overview of observing facilities for solar research, which are planned or will come to operation in near future. We concentrate on facilities, which harbor specific potential for solar magnetometry. We describe the challenges and science goals of future magnetic measurements, the status of magnetic field measurements at different major solar observatories, and provide an outlook on possible upgrades of future instrumentation.

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New vacuum solar telescope and observations with high resolution

Cited by 281 publications

References 13 publications

Are Iris Bombs Connected to Ellerman Bombs?

Are Iris Bombs Connected to Ellerman Bombs?

The transition region above sunspots

Prospects of Solar Magnetometry—From Ground and in Space

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