Zobrazeno 1 - 10
of 993
pro vyhledávání: '"Valéry M"'
Autor:
Lim, Daye, Van Doorsselaere, Tom, Nakariakov, Valery M., Kolotkov, Dmitrii Y., Gao, Yuhang, Berghmans, David
Publikováno v:
A&A 690, L8 (2024)
Context. Recent observations of decayless transverse oscillations have shown two branches in the relationship between periods and loop lengths. One is a linear relationship, interpreted as a standing mode. The other shows almost no correlation and ha
Externí odkaz:
http://arxiv.org/abs/2409.12095
Quasi-periodic pulsations (QPP) are often detected in solar and stellar flare lightcurves. These events may contain valuable information about the underlying fundamental plasma dynamics as they are not described by the standard flare model. The detec
Externí odkaz:
http://arxiv.org/abs/2408.05038
Autor:
Kwiatkowski, Grzegorz J., Miranda, Ivan P., Holmqvist, Cecilia M., Canali, Carlo M., Lobanov, Igor S., Uzdin, Valery M., Manolescu, Andrei, Bessarab, Pavel F., Erlingsson, Sigurður I.
An optimal protocol for the current-induced switching of a perpendicularly magnetized nanoelement placed on the surface of a topological insulator is presented. The time dependence of both in-plane components of the surface current that induces the m
Externí odkaz:
http://arxiv.org/abs/2406.09287
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 decayless ki
Externí odkaz:
http://arxiv.org/abs/2406.07490
Autor:
Nakariakov, Valery M., Zhong, Sihui, Kolotkov, Dmitrii Y., Meadowcroft, Rebecca L., Zhong, Yu, Yuan, Ding
Macroscopic wave and oscillatory phenomena ubiquitously detected in the plasma of the corona of the Sun are interpreted in terms of magnetohydrodynamic theory. Fast and slow magnetoacoustic waves are clearly distinguished in observations. Properties
Externí odkaz:
http://arxiv.org/abs/2404.00105
Mutual conversion of various kinds of magnetohydrodynamic (MHD) waves can have profound impacts on wave propagation, energy transfer, and heating of the solar chromosphere and corona. Mode conversion occurs when an MHD wave travels through a region w
Externí odkaz:
http://arxiv.org/abs/2403.02250
The highly-filamented nature of the coronal plasma significantly influences dynamic processes in the corona such as magnetohydrodynamic waves and oscillations. Fast magnetoacoustic waves, guided by coronal plasma non-uniformities, exhibit strong geom
Externí odkaz:
http://arxiv.org/abs/2311.14512
Autor:
Zhong, Sihui, Nakariakov, Valery M., Kolotkov, Dmitrii Y., Chitta, Lakshmi Pradeep, Antolin, Patrick, Verbeeck, Cis, Berghmans, David
Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation mechanisms
Externí odkaz:
http://arxiv.org/abs/2308.10573
The energy balance in the corona of the Sun is the key to the long-standing coronal heating dilemma, which could be potentially revealed by observational studies of decayless kink oscillations of coronal plasma loops. A bundle of very long off-limb c
Externí odkaz:
http://arxiv.org/abs/2308.05479
Autor:
Kuchkin, Vladyslav M., Kiselev, Nikolai S., Rybakov, Filipp N., Lobanov, Igor S., Blügel, Stefan, Uzdin, Valery M.
Cubic chiral magnets exhibit a remarkable diversity of two-dimensional topological magnetic textures, including skyrmions. However, the experimental confirmation of topological states localized in all three spatial dimensions remains challenging. In
Externí odkaz:
http://arxiv.org/abs/2304.10181