Results 81 to 90 of about 1,576,389 (170)
Five-minute Periodicities in the Population of Solar Coronal Brightenings
The Astrophysical JournalThe population of small-scale brightenings observed across broad regions of the quiet-Sun (QS) corona shows coherent strong periodicities of ≈5 minutes and amplitudes of 20% to 30% of the mean.
Huw Morgan +4 more
doaj +1 more source
Astronomy & AstrophysicsContext. Prominences and coronal rain are two manifestations of coronal condensation, whose formation mechanisms remain only partially understood.
McMurdo M. +3 more
doaj +1 more source
The Astrophysical JournalWe present the results of models of impulsively heated coronal loops using the 1D hydrodynamic Adaptively Refined Godunov Solver code. The impulsive heating events (which we refer to as nanoflares ) are modeled by discrete pulses of energy along the loop.
Therese A. Kucera +2 more
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Coronal Loop Heating By Discrete Alfvén Waves
, 2015 We have modeled the solar coronal active loop heating by discrete Alfvén waves. Discrete Alfvén waves (DAW) are a new class of Alfvén waves which can be described by the two-fluid model with finite ion-cyclotron frequency, or the MHD model with plasma ...
Sakanaka P.H. +3 more
core +1 more source
Large Scale Properties of Coronal Heating along the Solar Cycle [PDF]
, 2010 We discuss various studies of the global properties of coronal heating. Some of them find power laws tying the X-ray luminosity with the magnetic flux of individual structures, of the whole Sun, and of active solar-type stars. Others are based on methods
Orlando, S +3 more
core
Coronal Heating from Alfvén Wave Turbulence in Solar Coronal Loops
, 2020 Many scientific theories have been proposed in the hopes of better understanding the coronal heating problem. This project largely focuses on the theory that the Solar Corona is heated by Alfvén Wave turbulence from solar coronal loops.
Hamann, Sydney
core +1 more source
Additional acceleration of solar-wind particles in current sheets of the heliosphere [PDF]
, 2015 Particles of fast solar wind in the vicinity of the heliospheric current sheet (HCS) or in a front of interplanetary coronal mass ejections (ICMEs) often reveal very peculiar energy or velocity profiles, density distributions with double or triple peaks,
V. Zharkova +4 more
core +2 more sources
A Quasi-2D Turbulence Model of Coronal Heating Including Thermal Conduction and Radiative Cooling
The Astrophysical JournalOne of the key mechanisms proposed for coronal heating is dissipation of quasi-two-dimensional (2D) turbulence generated above the photosphere by continual mixing and convective shuffling of open and closed magnetic field lines within the so-called ...
Krishna Khanal +2 more
doaj +1 more source
Reconnection Nanojets in an Erupting Solar Filament with Unprecedented High Speeds
The Astrophysical Journal LettersSolar nanojets are small-scale jets generated by component magnetic reconnection, characterized by collimated plasma motion perpendicular to the reconnecting magnetic field lines.
Yuhang Gao +6 more
doaj +1 more source
Modeling Time-variable Elemental Abundances in Coronal Loop Simulations
The Astrophysical Journal LettersNumerous recent X-ray observations of coronal loops in both active regions and solar flares have shown clearly that elemental abundances vary with time.
Jeffrey W. Reep +3 more
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