Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Kolotkov, D."'
Publikováno v:
A&A 677, A23 (2023)
We compute the evidence in favour of two models, one based on field-aligned thermal conduction alone and another that includes thermal misbalance as well, in explaining the damping of slow magneto-acoustic waves in hot coronal loops. Our analysis is
Externí odkaz:
http://arxiv.org/abs/2307.02439
Autor:
Belov, S. A., Riashchikov, D. I., Kolotkov, D. Y., Farahani, S. Vasheghani, Molevich, N. E., Bezrukovs, V. V.
Torsional Alfv\'en waves in coronal plasma loops are usually considered to be non-collective, i.e. consist of cylindrical surfaces evolving independently, which significantly complicates their detection in observations. This non-collective nature, ho
Externí odkaz:
http://arxiv.org/abs/2305.07485
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 515, Issue 2, September 2022, Pages 2415-2429
We investigated the solar cycle dependency on the presence and periodicity of the Quasi-Biennial Oscillation (QBO). Using helioseismic techniques, we used solar oscillation frequencies from the Global Oscillations Network Group (GONG), Michelson Dopp
Externí odkaz:
http://arxiv.org/abs/2207.14560
The presence and interplay of continuous cooling and heating processes maintaining the corona of the Sun at the observed one million K temperature were recently understood to have crucial effects on the dynamics and stability of magnetoacoustic waves
Externí odkaz:
http://arxiv.org/abs/2111.02370
Autor:
Nakariakov, V. M., Anfinogentov, S. A., Antolin, P., Jain, R., Kolotkov, D. Y., Kupriyanova, E. G., Li, D., Magyar, N., Nistico, G., Pascoe, D. J., Srivastava, A. K., Terradas, J., Farahani, S. Vashegani, Verth, G., Yuan, D., Zimovets, I. V.
Publikováno v:
Space Science Reviews, 2021, Volume 217, Issue 6, article id.73
Kink oscillations of coronal loops, i.e., standing kink waves, is one of the most studied dynamic phenomena in the solar corona. The oscillations are excited by impulsive energy releases, such as low coronal eruptions. Typical periods of the oscillat
Externí odkaz:
http://arxiv.org/abs/2109.11220
The multi-species plasma of natural or laboratory origin is often considered to host nonlinear ion-acoustic waves. We present calculations of ion fluxes induced by nonlinear ion-acoustic waves in a plasma consisting of multiple ion populations, elect
Externí odkaz:
http://arxiv.org/abs/2107.09368
The processes of the coronal plasma heating and cooling were previously shown to significantly affect the dynamics of slow magnetoacoustic (MA) waves, causing amplification or attenuation, and also dispersion. However, the entropy mode is also excite
Externí odkaz:
http://arxiv.org/abs/2104.12652
Publikováno v:
A&A 646, A155 (2021)
Slow magnetoacoustic waves are routinely observed in astrophysical plasma systems such as the solar corona. As a slow wave propagates through a plasma, it modifies the equilibrium quantities of density, temperature, and magnetic field. In the corona
Externí odkaz:
http://arxiv.org/abs/2011.10437
Publikováno v:
A&A 644, A33 (2020)
The hot solar corona exists because of the balance between radiative and conductive cooling and some counteracting heating mechanism which remains one of the major puzzles in solar physics. The coronal thermal equilibrium is perturbed by magnetoacous
Externí odkaz:
http://arxiv.org/abs/2010.03364
Publikováno v:
A&A 642, A195 (2020)
Solar flares with a fan-spine magnetic topology can form circular ribbons. The previous study based on H\alpha line observations of the solar flares during March 05, 2014 by Xu et al. (2017) revealed uniform and continuous rotation of the magnetic fa
Externí odkaz:
http://arxiv.org/abs/2008.02010