Results 111 to 120 of about 16,413 (221)

Modeling the Excitation, Propagation, and Damping of Quasiperiodic Fast Magnetosonic Waves in Realistic Coronal Active Region Magnetic Field Structures

The Astrophysical Journal
Quasiperiodic fast propagating (QFP) magnetosonic waves have been discovered in the solar corona in the extreme ultraviolet (EUV) since the launch of the Solar Dynamics Observatory (SDO) spacecraft more than a decade ago.
Leon Ofman, Tongjiang Wang, Xudong Sun, Meng Jin   +3 more
doaj   +1 more source

Measuring the Coronal Magnetic Field with 2D Coronal Seismology: A Forward-modeling Validation

The Astrophysical Journal Supplement Series
In recent years, a two-dimensional (2D) coronal seismology technique applied to spectral-imaging data from the Coronal Multi-channel Polarimeter (CoMP) and Upgraded Coronal Multi-channel Polarimeter (UCoMP) has enabled routine measurement of the global ...
Zihao Yang, Matthias Rempel, Sarah Gibson, Giuliana de Toma   +3 more
doaj   +1 more source

Association of 3He-Rich Solar Energetic Particles with Large-Scale Coronal Waves

, 2016
Small 3He-rich solar energetic particle (SEP) events have been commonly associated with extreme-ultraviolet (EUV) jets and narrow coronal mass ejections (CMEs) which are believed to be the signatures of magnetic reconnection involving field lines open to
Bucik, Radoslav, Innes, Davina E., Mason, Glenn M., Wiedenbeck, Mark E.   +3 more
core   +1 more source

Propagating waves in polar coronal holes as seen by SUMER and EIS

, 2009
To study the dynamics of coronal holes and the role of waves in the acceleration of the solar wind, spectral observations were performed over polar coronal hole regions with the SUMER spectrometer on SoHO and the EIS spectrometer on Hinode.
Banerjee, Banerjee, Banerjee, Culhane, D. Banerjee, Deforest, G. R. Gupta, G. Stenborg, Kosugi, L. Teriaca, O'Shea, O'Shea, O'Shea, Ofman, Ofman, Ofman, Ofman, Popescu, S. Imada, S. K. Solanki, Torrence, Wilhelm   +21 more
core   +1 more source

Signatures of Damping Nonlinear Oscillations by Kelvin–Helmholtz Instability–induced Turbulence in Synthetic Observations

The Astrophysical Journal
Large-amplitude decaying kink oscillations of coronal loops are strongly influenced by nonlinear processes such as Kelvin–Helmholtz instability (KHI) and turbulence, although comprehensive theoretical understanding and observational confirmation remain ...
Sihui Zhong, Andrew Hillier, Iñigo Arregui   +2 more
doaj   +1 more source

Phase mixing of standing Alfven waves with shear flows in solar spicules

, 2012
Alfvenic waves are thought to play an important role in coronal heating and solar wind acceleration. Here we investigate the dissipation of such waves due to phase mixing at the presence of shear flow and field in the stratified atmosphere of solar ...
A.C. Sterling, B. Pontieu De, E.K. Kaghashvili, E.R. Priest, G. Verth, H. Ebadi, H. Ebadi, H. Ebadi, H. Saleem, I. Moortel De, I. Moortel De, J. Heyvaerts, K. Karami, K. Murawski, M. Hosseinpour, P.D. Smith, S. Poedts, T.J. Okamoto, T.V. Zaqarashvili, T.V. Zaqarashvili, V. Kukhianidze   +20 more
core   +1 more source

Coronal Waves and Oscillations

Living Reviews in Solar Physics, 2005
Wave and oscillatory activity of the solar corona is confidently observed with modern imaging and spectral instruments in the visible light, EUV, X-ray and radio bands, and interpreted in terms of magnetohydrodynamic (MHD) wave theory.
Nakariakov Valery M., Verwichte Erwin
doaj  

Detection of Kink Oscillations in Solar Coronal Loops by a Convolutional Neural Network–Long Short-term Memory Neural Network

The Astrophysical Journal Supplement Series
A hybrid machine learning model, which combines a shallow convolutional neural network and a long short-term memory (CNN-LSTM) network, has been developed to automate the detection of kink oscillations in coronal plasma loops within large volumes of high-
Sergey A. Belov, Yu Zhong, Dmitrii Y. Kolotkov, Valery M. Nakariakov   +3 more
doaj   +1 more source

CORONAL JETS SIMULATED WITH THE GLOBAL ALFVÉN WAVE SOLAR MODEL

The Astrophysical Journal, 2017
ABSTRACT This paper describes a numerical modeling study of coronal jets to understand their effects on the global corona and their contribution to the solar wind. We implement jets into a well-established three-dimensional, two-temperature magnetohydrodynamic (MHD) solar corona model employing Alfvén-wave dissipation to produce a ...
J. Szente, G. Toth, W. B. Manchester IV, B. van der Holst, E. Landi, T. I. Gombosi, C. R. DeVore, S. K. Antiochos   +7 more
openaire   +1 more source

Effect of coronal temperature on the scale of solar chromospheric jets

, 2015
We investigate the effect of coronal temperature on the formation process of solar chromospheric jets using two-dimensional magnetohydrodynamic simulations of the region from the upper convection zone to the lower corona.
Iijima, H., Yokoyama, T.
core   +1 more source