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We analyze high cadence high resolution observations of a C3.2 flare obtained by AIA/SDO on August 1, 2010. The flare is a long duration event with soft X-ray and EUV radiation lasting for over four hours. Analysis suggests that magnetic…

太阳与恒星天体物理 · 物理学 2015-06-03 Jiong Qiu , Wen-Juan Liu , Dana W. Longcope

Recent instrumentation has demonstrated that the solar atmosphere supports omnipresent transverse waves, which could play a key role in energizing the solar corona. Large-scale studies are required in order to build up an understanding of…

太阳与恒星天体物理 · 物理学 2018-07-16 Micah J. Weberg , Richard J. Morton , James A. McLaughlin

We present a new method that combines the results of an oscillation study made in optical and radio observations. The optical spectral measurements in photospheric and chromospheric lines of the line-of-sight velocity were carried out at…

太阳与恒星天体物理 · 物理学 2015-03-18 V. E. Abramov-Maximov , G. B. Gelfreikh , N. I. Kobanov , K. Shibasaki , S. A. Chupin

Context: As a ubiquitous phenomenon, large-amplitude longitudinal filament oscillations usually decay in 1--4 periods. Recently, we observed a decayless case of such oscillations in the corona. Aims: We try to understand the physical…

太阳与恒星天体物理 · 物理学 2022-07-13 Y. W. Ni , J. H. Guo , Q. M. Zhang , J. L. Chen , C. Fang , P. F. Chen

The systematic monitoring of the solar wind in high-cadence and high-resolution heliospheric images taken by the Solar-Terrestrial Relation Observatory (STEREO) spacecraft permits the study of the spatial and temporal evolution of variable…

Using high-resolution data from the Chashan Broadband Solar radio spectrometer at meter wavelengths (CBSm) of the Chinese Meridian Project-Phase II (CMP-II), Li et al. (2025) identified a novel fine spectral structure of solar radio bursts,…

太阳与恒星天体物理 · 物理学 2026-04-30 Chuanyang Li , Yao Chen , Bing Wang , Yutong Li , Xiangliang Kong , Hao Ning , Sulan Ni , Shuwang Chang , Zichuan Li , Yang Gao , Zhe Cui , Li Deng , Jingye Yan , Fabao Yan

Sunward-flowing voids above post-coronal mass ejection (CME) flare arcades were first discovered using the soft X-ray telescope (SXT) aboard Yohkoh and have since been observed with TRACE (extreme ultra-violet (EUV)), SOHO/LASCO (white…

太阳与恒星天体物理 · 物理学 2015-05-27 Sabrina L. Savage , David E. McKenzie

We present a new automated algorithm to identify, track, and characterize small-scale brightening associated with solar eruptive phenomena observed in H{\alpha}. The temporal spatially-localized changes in chromospheric intensities can be…

太阳与恒星天体物理 · 物理学 2015-05-30 M. S. Kirk , K. S. Balasubramaniam , J. Jackiewicz , B. J. McNamara , R. T. J. McAteer

The transition of an impulsively excited kink oscillation of a solar coronal loop to an oscillation with a stationary amplitude, i.e., the damping pattern, is determined using the low-dimensional self-oscillation model. In the model, the…

太阳与恒星天体物理 · 物理学 2024-06-12 Valery M. Nakariakov , Yu Zhong , Dmitrii Y. Kolotkov

Decayless kink oscillations of solar coronal loops are studied in terms of a low-dimensional model based on a randomly driven Rayleigh oscillator with coefficients experiencing random fluctuations. The model considers kink oscillations as…

太阳与恒星天体物理 · 物理学 2022-09-28 Valery M. Nakariakov , Dmitrii Y. Kolotkov , Sihui Zhong

We analyze intermediate degree p-mode eigenfrequencies measured by GONG and MDI/SOHO over a solar cycle to study the source of their variability. We carry out a correlation analysis between the change in frequencies and several measures of…

太阳与恒星天体物理 · 物理学 2011-02-11 Kiran Jain , S. C. Tripathy , F. Hill

Helioseismic signatures of dynamo waves have recently been discovered in variations of the solar differential rotation, offering valuable insights into the type of dynamo mechanism operating in the solar convection zone. To characterize…

太阳与恒星天体物理 · 物理学 2025-05-19 Krishnendu Mandal , Alexander G. Kosovichev , Valery V. Pipin , Sylvain G. Korzennik

The Solar Dynamics Observatory (SDO) was launched in February 2010 and is now providing an unprecedented view of the solar activity at high spatial resolution and high cadence covering a broad range of temperature layers of the atmosphere.…

太阳与恒星天体物理 · 物理学 2015-05-28 S. Regnier , R. W. Walsh , C. E. Alexander

The multi-wavelength data from the Solar Dynamics Observatory (SDO) is extensively used in studying the physics of the Sun and its atmosphere. In this study, we estimate the formation heights of low-corona and chromospheric channels of the…

太阳与恒星天体物理 · 物理学 2024-11-08 Y. Sanjay , S. Krishna Prasad , R. Erdelyi , M. B. Korsos , D. Banerjee , P. S. Rawat

With the rapid development of telescopes, both temporal cadence and the spatial resolution of observations are increasing. This in turn generates vast amount of data, which can be efficiently searched only with automated detections in order…

太阳与恒星天体物理 · 物理学 2019-01-30 Q. Hao , P. F. Chen , C. Fang

The solar atmosphere is a dynamic environment, constantly evolving to form a wide range of magnetically dominated structures (coronal loops, spicules, prominences, etc.) which cover a significant percentage of the surface at any one time.…

太阳与恒星天体物理 · 物理学 2013-06-06 R. Erdélyi , A. Hague , C. J. Nelson

Rapidly decaying slow magnetoacoustic waves are regularly observed in the solar coronal structures, offering a promising tool for a seismological diagnostics of the coronal plasma, including its thermodynamical properties. The effect of…

太阳与恒星天体物理 · 物理学 2019-08-21 D. Y. Kolotkov , V. M. Nakariakov , D. I. Zavershinskii

Recent observations with the Atmospheric Imaging Assembly (AIA) instrument on the SDO spacecraft have revealed the existence of decayless coronal kink oscillations. These transverse oscillations are not connected to any external phenomena…

太阳与恒星天体物理 · 物理学 2019-06-06 K. Karampelas , T. Van Doorsselaere , D. J. Pascoe , M. Guo , P. Antolin

Aims. We construct a new analytical model of a solar coronal loop that is embedded in a gravitationally stratified and magnetically confined atmosphere. On the basis of this analytical model, we devise a numerical model of solar coronal…

太阳与恒星天体物理 · 物理学 2015-03-25 K. Murawski , A. Solov'ev , J. Kraskiewicz , A. K. Srivastava