Xiaoli Yan

Statistical Study of Solar Prominence Plumes Based on NVST H α Observations

Yangrui Chen, Yijun Hou, Jincheng Wang, Ting Li et autres

Abstract Plumes are one of the most representative dynamic features observed in prominences and play a key role in mass and magnetic transport within them. However, their physical nature and triggering processes remain actively debated. Based on limb H α observations from …

cn, tw (code pays fourni par la source)

Observational Evidence of Solar Spicules Associated with Microfilament Eruptions Using DKIST

Qifan Dong, Xiaoli Yan, Zhike Xue, Liheng Yang et autres

Abstract The formation mechanism of spicules is fundamentally important for understanding mass and energy transport from the chromosphere into the corona. Recent studies suggested that spicules may be powered by microfilament eruptions. However, direct observational evidence remains limited due to insufficient spatial …

cn (code pays fourni par la source)

A Compact, Ultra-high-resolution Virtually Imaged Phased Array Spectrograph for Solar Spectroscopic Observations: Astrocomb Characterization and First Light

Yue Wang, Xiaoming Zhu, Xiaoli Yan, P. F. Chen et autres

Abstract We present a compact, high-spectral-resolution prototype spectrograph based on a Virtually Imaged Phased Array (VIPA), which is designed for solar spectral observations. This fiber-fed instrument has a size of only 53 × 20 × 18 cm 3 . Wavelength calibration using …

cn (code pays fourni par la source)

Spectroscopic Case Studies of Four Long-duration Transition-region Explosive Events

Yian Zhou, Xiaoli Yan, Zhike Xue, Liheng Yang et autres

Abstract This work presents a detailed spectroscopic case study of four long-duration transition-region (TR) explosive events (EEs) observed in NOAA Active Region 13213 on 2023 February 10 using the Interface Region Imaging Spectrograph. The dynamic spectral evolution of each event is tracked …

cn (code pays fourni par la source)

Herringbone Structures during an X-class Eruptive Flare

Qingmin Zhang, Zongjun Ning, Xingyao Chen, W. Chen et autres

Abstract In this paper, we report quasiperiodic herringbone structures during the impulsive phase of an X-class flare, coinciding with the distinct acceleration phase of eruptive prominence ejection on 2023 December 31. The prominence propagates nonradially in the southeast direction with an inclination …

cn (code pays fourni par la source)

Witnessing Magnetic Reconnection in Tangled Superpenumbral Fibrils around a Sunspot

Hechao Chen, Hui Tian, Eric Ronald Priest, Christopher B. Prior et autres

Abstract 3D magnetic reconnection is a fundamental plasma process crucial for heating the solar corona and generating the solar wind, but resolving and characterizing it for the Sun remain challenging. Using high-quality data from the Chinese New Vacuum Solar Telescope, the Solar …

Observational Study of Chromospheric Jets In and Around a Sunspot Observed by NVST and SDO

G. J. Wu, Xiaoli Yan, Zhike Xue, Jincheng Wang et autres

Abstract To better understand the characteristics, driving mechanisms, and potential heating contributions of chromospheric jets, we analyze two contrasting types: one originating from within the sunspot penumbra (inside jets) and the other originating from outside the penumbra (outside jets). Statistical analysis of …

cn (code pays fourni par la source)

Observational Analysis of Multithermal Counterstreaming Flows in a Forming Filament and Their Relationship with Local Heating at Filament Footpoints

Hongrui Li, Hechao Chen, Chun Lin Xia, Xiaoli Yan et autres

Abstract Utilizing high-resolution imaging and spectroscopic observations from the New Vacuum Solar Telescope, the Interface Region Imaging Spectrograph, and the Solar Dynamics Observatory, we investigated the nature and origin of counterstreaming flows within a forming active region filament. The ever-present counterstreaming flows …

Witnessing Magnetic Reconnection in Tangled Superpenumbral Fibrils Around a Sunspot

Hechao Chen, Hui Tian, Eric Ronald Priest, Christopher B. Prior et autres

Three-dimensional magnetic reconnection is a fundamental plasma process crucial for heating the solar corona and generating the solar wind, but resolving and characterizing it on the Sun remains challenging. Using high-quality data from the Chinese New Vacuum Solar Telescope, the Solar Dynamics …

Properties of Chromospheric Fibrils Around a Quiescent Filament

Qifan Dong, Xiaoli Yan, Zhike Xue, Jincheng Wang et autres

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 fibrils surrounding the filament. By employing high-resolution H-alpha data …

Properties of chromospheric fibrils around a quiescent filament

Qifan Dong, Xiaoli Yan, Zhike Xue, Jincheng Wang et autres

ABSTRACT 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 fibrils surrounding the filament. By employing high-resolution H …

cn (code pays fourni par la source)

High-resolution Observation of Solar Prominence Plumes Induced by Enhanced Spicular Activity

Wensi Wang, Rui Liu, Runbin Luo, Xiaoli Yan

Abstract Solar prominences are the most prominent large-scale structures observed above the solar limb in emission in chromospheric lines but in absorption in coronal lines. At the bottom of prominences often appears a bubble, with plumes occasionally rising from the prominence–bubble interface. …

cn (code pays fourni par la source)