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相关论文: Fast Magnetosonic Waves and Flows in a Solar Promi…

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We study nonlinear waves in a prominence foot using 2.5D MHD model motivated by recent high-resolution observations with Hinode/SOT in Ca~II emission of a prominence on October 10, 2012 showing highly dynamic small-scale motions in the…

太阳与恒星天体物理 · 物理学 2015-11-11 Leon Ofman , Kalman Knizhnik , Therese Kucera , Brigitte Schmieder

We investigate the properties of nonlinear fast magnetosonic (NFM) waves in a solar prominence, motivated by recent high-resolution and high-cadence Hinode/SOT observations of small-scale oscillations in a prominence pillar. As an example,…

太阳与恒星天体物理 · 物理学 2023-03-08 Leon Ofman , Therese A. Kucera , C. Richard DeVore

We report an unusual set of observations of waves in a large prominence pillar which consist of pulses propagating perpendicular to the prominence magnetic field. We observe a huge quiescent prominence with the Solar Dynamics Observatory…

太阳与恒星天体物理 · 物理学 2015-06-17 B. Schmieder , T. A. Kucera , K. Knizhnik , M. Luna , A. Lopez-Ariste , D. Toot

We report the observations of the magneto-hydrodynamic waves propagating along magnetic flux tubes in the solar photosphere. We identified 20 isolated strong peaks (8 peaks for pores and 12 peaks for inter-granular magnetic structure) in…

太阳与恒星天体物理 · 物理学 2015-05-13 Daisuke Fujimura , Saku Tsuneta

Recent observations by Hinode/SOT show that MHD waves and mass flows are simultaneously present in the fine structure of solar prominences. We investigate standing kink magnetohydrodynamic (MHD) waves in flowing prominence threads from a…

太阳与恒星天体物理 · 物理学 2015-05-28 Roberto Soler , Marcel Goossens

We report the first observation of multiple-periodic propagating disturbances along a fan-like coronal structure simultaneously detected in both intensity and Doppler shift in the Fe XII 195 A line with the EUV Imaging Spectrometer (EIS)…

太阳与恒星天体物理 · 物理学 2010-11-11 T. J. Wang , L. Ofman , J. M. Davila , J. T. Mariska

Helioseismic and magnetohydrodynamic waves are abundant in and above sunspots. Through cross-correlating oscillation signals in the photosphere observed by the SDO/HMI, we reconstruct how waves propagate away from virtual wave sources…

太阳与恒星天体物理 · 物理学 2015-08-19 Junwei Zhao , Ruizhu Chen , Thomas Hartlep , Alexander G. Kosovichev

We study Hinode/SOT-FG observations of intensity fluctuations in Ca II H-line and G-band image sequences and their relation to simultaneous and co-spatial magnetic field measurements. We explore the G-band and H-line intensity oscillation…

太阳与恒星天体物理 · 物理学 2015-06-05 J. K. Lawrence , A. C. Cadavid

Waves are thought to play a significant role in the heating of the solar atmosphere and the acceleration of the wind. Among the many types of waves observed in the Sun, the so-called p-modes with a 3 mHz frequency peak dominate the lower…

Fine-structure dynamics in solar prominences holds critical clues to understanding their physical nature of significant space-weather implications. We report evidence of rotational motions of horizontal helical threads in two active-region…

太阳与恒星天体物理 · 物理学 2016-11-09 Takenori J. Okamoto , Wei Liu , Saku Tsuneta

Quasi-periodic propagating intensity disturbances have been observed in large coronal loops in EUV images over a decade, and are widely accepted to be slow magnetosonic waves. However, spectroscopic observations from Hinode/EIS revealed…

太阳与恒星天体物理 · 物理学 2015-11-04 X. Fang , D. Yuan , T. Van Doorsselaere , R. Keppens , C. Xia

We observed small scale magnetic flux emergence in a sunspot moat region by the Solar Optical Telescope (SOT) aboard the Hinode satellite. We analyzed filtergram images observed in the wavelengths of Fe 6302 angstrom, G-band and Ca II H. In…

Recent observations with the Hinode Solar Optical Telescope display an active region prominence whose fine threads oscillate in the vertical direction as they move along a path parallel to the photosphere. A seismological analysis of this…

天体物理学 · 物理学 2009-11-13 J. Terradas , I. Arregui , R. Oliver , J. L. Ballester

Small-scale, cyclic, transverse motions of plasma threads are usually seen in solar prominences, which are often interpreted as magnetohydrodynamic (MHD) waves. Here, we observed small-scale decayless transverse oscillations in a quiescent…

太阳与恒星天体物理 · 物理学 2022-01-20 Dong Li , Jianchao Xue , Ding Yuan , Zongjun Ning

Transverse oscillations of thin threads in solar prominences are frequently reported in high-resolution observations. Two typical features of the observations are that the oscillations are damped in time and that simultaneous mass flows…

太阳与恒星天体物理 · 物理学 2015-06-11 R. Soler , M. S. Ruderman , M. Goossens

Slow magnetoacoustic waves in a static background provide a seismological tool to probe the solar atmosphere in the analytic frame. By analyzing the spatiotemporal variation of the electron number density of plume structure in coronal holes…

太阳与恒星天体物理 · 物理学 2020-09-09 Il-Hyun Cho , Valery M. Nakariakov , Yong-Jae Moon , Jin-Yi Lee , Dae Jung Yu , Kyung-Suk Cho , Vasyl Yurchyshyn , Harim Lee

Aims. Taking account of steady flow in solar prominences, we study its effects on spatial damping of small-amplitude non-adiabatic magnetoacoustic waves in a homogeneous, isothermal, and unbounded prominence plasma. Methods. We model the…

天体物理学 · 物理学 2007-11-16 K. A. P. Singh , R. Erdelyi , B. N. Dwivedi

We characterize waves in small magnetic elements and investigate their propagation in the lower solar atmosphere from observations at high spatial and temporal resolution. We use the wavelet transform to analyze oscillations of both…

太阳与恒星天体物理 · 物理学 2017-03-31 Shahin Jafarzadeh , S. K. Solanki , M. Stangalini , O. Steiner , R. H. Cameron , S. Danilovic

Solar prominences, intricate structures on the Sun's limb, have been a subject of fascination due to their thread-like features and dynamic behaviors. Utilizing data from the New Vacuum Solar Telescope (NVST), Chinese H_alpha Solar Explorer…

太阳与恒星天体物理 · 物理学 2024-04-05 Jincheng Wang , Dong Li , Chuan Li , Yijun Hou , Zhike Xue , Zhe Xu , Liheng Yang , Qiaoling Li

We study the space-time distributions of intensity fluctuations in 2 - 3 hour sequences of multi-spectral, high-resolution, high-cadence broad-band filtergram images (BFI) made by the SOT-FG system aboard the Hinode spacecraft. In the…

太阳与恒星天体物理 · 物理学 2015-05-13 J. K. Lawrence , A. C. Cadavid
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