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It is important to study the fine structures of solar filaments with high-resolution observations since it can help us understand the magnetic and thermal structures of the filaments and their dynamics. In this paper, we study a…

太阳与恒星天体物理 · 物理学 2017-02-01 P. Zou , C. Fang , P. F. Chen , K. Yang , Q. Hao , Wenda Cao

One main goal of the New Vacuum Solar Telescope (NVST) which is located at the \emph{Fuxian Solar Observatory} is to image the Sun at high resolution. Based on the high spatial and temporal resolution NVST H$\alpha$ data and combined with…

太阳与恒星天体物理 · 物理学 2015-06-19 Shuhong Yang , Jun Zhang , Zhong Liu , Yongyuan Xiang

Filaments/prominences are cold plasma (~ 10000 K) embedded in the solar corona, two orders of magnitude hotter. Filament plasma is structured by the magnetic field in thin elongated threads. Counter-streaming flows have been observed. The…

太阳与恒星天体物理 · 物理学 2025-06-24 Garima Karki , Brigitte Schmieder , Pascal Demoulin , Pooja Devi , Ramesh Chandra , Reetika Joshi

Fibrils are dynamic plasma structures in the solar chromosphere. Studying these structures is critical for understanding solar atmospheric heating and mass transportation. The purpose of this study is to obtain the characteristics of…

太阳与恒星天体物理 · 物理学 2025-09-24 Qifan Dong , Xiaoli Yan , Zhike Xue , Jincheng Wang , Zhe Xu , Liheng Yang , Yian Zhou , Xinsheng Zhang , Zongyin Wu , Guotang Wu

Solar flares signify the sudden release of magnetic energy and are sources of so called space weather. The fine structures (below 500 km) of flares are rarely observed and are accessible to only a few instruments world-wide. Here we present…

太阳与恒星天体物理 · 物理学 2016-04-29 Ju Jing , Yan Xu , Wenda Cao , Chang Liu , Dale Gary , Haimin Wang

A giant, quiet-Sun filament was observed with the high-resolution Echelle spectrograph at the Vacuum Tower Telescope at Observatorio del Teide on 2011 November 15. A mosaic of spectra (10 maps of 100" X 182") was recorded simultaneously in…

太阳与恒星天体物理 · 物理学 2016-04-20 C. Kuckein , M. Verma , C. Denker

Solar filaments, also called solar prominences when appearing above the solar limb, are cold, dense materials suspended in the hot tenuous solar corona, consisting of numerous long, fibril-like threads. These threads are the key to…

太阳与恒星天体物理 · 物理学 2021-04-29 Y. H. Zhou , P. F. Chen , J. Hong , C. Fang

A giant solar filament was visible on the solar surface from 2011 Nov. 8-23. The filament stretched over more than half a solar diameter. Multiwavelength data from the SDO instrument AIA (171, 193, 304, and 211\AA) were used to examine…

太阳与恒星天体物理 · 物理学 2018-03-28 A. Diercke , C. Kuckein , M. Verma , C. Denker

We present a selected few cases in which the sense of chirality of filament barbs changed within as short as hours. We investigate in detail a quiescent filament on 2003 September 10 and 11. Of its four barbs displaying such changes only…

太阳与恒星天体物理 · 物理学 2010-01-12 Rui Liu , Yan Xu , Haimin Wang

Observations with the 1-m Swedish Solar Telescope of the flows seen in penumbral filaments are presented. Time sequences of bright filaments show overturning motions strikingly similar to those seen along the walls of small isolated…

太阳与恒星天体物理 · 物理学 2021-07-22 H. C. Spruit , G. B. Scharmer , M. G. Löfdahl

Solar prominences (or filaments) are cooler and denser plasma suspended in the much hotter and rarefied solar corona. When viewed on the solar disc filament barbs or feet protrude laterally from filament spine. When observed at the limb of…

太阳与恒星天体物理 · 物理学 2025-09-25 Huadong Chen , Chun Xia , Suli Ma , Yingna Su , Guiping Zhou , Eric Priest , Lyndsay Fletcher , Yuandeng Shen , Weining Tu , Wei Wang , Jun Zhang

We analyze the high-resolution observations from the 1.6m telescope at Big Bear Solar Observatory that cover an active region filament. Counter-streaming motions are clearly observed in the filament. The northern end of the…

太阳与恒星天体物理 · 物理学 2018-01-10 Haimin Wang , Rui Liu , Qin Li , Chang Liu , Na Deng , Yan Xu , Ju Jing , Yuming Wang , Wenda Cao

We study the structure and evolution of the horizontal proper motions in a regular sunspot penumbra, very close to the solar disc center, in active region NOAA 11092 using a 48 min time sequences of blue continuum images recorded by…

太阳与恒星天体物理 · 物理学 2024-05-14 Hashem Hamedivafa

Using UV spectra and SJIs from the IRIS, and coronal images and magnetograms from the Solar Dynamics Observatory (SDO), we present the new features in a quiescent filament channel: subarcsecond bright points (BPs) and quasi-periodic…

太阳与恒星天体物理 · 物理学 2016-04-27 Ting Li , Jun Zhang

Flare ribbons serve as chromospheric footprints of energy deposition resulting from particle acceleration during magnetic reconnection. Their fine-scale structure provides a valuable tool for probing the dynamics of the flare reconnection…

High-resolution H$\alpha$ observations indicate that filaments consist of an assembly of thin threads. In quiescent filaments, the threads are generally short, whereas in active region filaments, the threads are generally long. In order to…

太阳与恒星天体物理 · 物理学 2015-06-18 Y. H. Zhou , P. F. Chen , Q. M. Zhang , C. Fang

Quiescent filaments are prominent features of the solar atmosphere, and their evolution reflects the coronal magnetic field's response to photospheric magnetic activity. Here, we report on a quiescent filament observed from 2023 September…

太阳与恒星天体物理 · 物理学 2026-02-03 Garima Karki , Jinhan Guo , Brigitte Schmieder , Ramesh Chandra , Pascal Démoulin , Stefaan Poedts , Bernard Gelly

Solar filaments are dark structures on the solar disk, with an elongated spine and several barbs extending out from the spine. When appearing above the solar limb, a filament is called a prominence, with several feet extending down to the…

太阳与恒星天体物理 · 物理学 2020-05-13 Y. Ouyang , P. F. Chen , S. Q. Fan , B. Li , A. A. Xu

We present fast cadence and high resolution observations of flare ribbons from the Solar Orbiter Extreme Ultraviolet Imager (EUI). Utilizing the short-exposure observations from the EUI High Resolution Imager in EUV (HRIEUV), we find…

Multi-instrument data sets of NOAA AR10938 on Jan. 16, 2007, (e.g., {\emph{Hinode}}, {\it{STEREO}}, {\it{GOES}}, {\it{MLSO}} and {\it{ISOON}} H$\alpha$) are utilized to study the fine structure and evolution of a magnetic loop system…

太阳与恒星天体物理 · 物理学 2009-11-13 N. -E. Raouafi
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