Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Anfinogentov, S. A."'
Strong coronal magnetic field, when present, manifests itself as bright microwave sources at high frequencies produced by gyroresonant (GR) emission mechanism in thermal coronal plasma. The highest frequency at which this emission is observed is prop
Externí odkaz:
http://arxiv.org/abs/2301.08922
Publikováno v:
Solar-Terrestrial Physics, Vol 9, Iss 3, Pp 102-111 (2023)
Radio observations of weak events are one of the promising methods for studying energy release and non-thermal processes in the solar corona. The development of instrumental capabilities allows for radio observations of weak transient coronal events,
Externí odkaz:
https://doaj.org/article/2d5dbbb901f243dfa4fff6a2775753bf
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
Autor:
Thalmann, J. K., Georgoulis, M. K., Liu, Y., Pariat, E., Valori, G., Anfinogentov, S., Chen, F., Guo, Y., Moraitis, K., Yang, S., Mastrano, A.
In this ISSI-supported series of studies on magnetic helicity in the Sun, we systematically implement different magnetic helicity calculation methods on high-quality solar magnetogram observations. We apply finite-volume, discrete flux tube (in parti
Externí odkaz:
http://arxiv.org/abs/2108.08525
Autor:
Chelpanov M. A., Anfinogentov S. A., Kostarev D. V., Mikhailova O. S., Rubtsov A. V., Fedenev V. V., Chelpanov A. A.
Publikováno v:
Solar-Terrestrial Physics, Vol 8, Iss 4, Pp 3-27 (2022)
Magnetohydrodynamic (MHD) waves play a crucial role in the plasma processes of stellar atmospheres and planetary magnetospheres. Wave phenomena in both media are known to have similarities and unique traits typical of each system. MHD waves and relat
Externí odkaz:
https://doaj.org/article/bb50bcd55521491fbc0aa3fcebf4cfa3
Autor:
Deres, A. S., Anfinogentov, S. A.
We present a seismological method to probe the solar atmosphere above sunspot umbrae with three-minute oscillations. Our technique allows us to estimate both the vertical distance between atmospheric layers and the wave-propagation speed without spec
Externí odkaz:
http://arxiv.org/abs/1710.11552
Autor:
Rudenko, G. V., Anfinogentov, S. A.
Calculation of the potential field inside a three-dimensional box with the normal magnetic field component given on all boundaries is needed for estimation of important quantities related to the magnetic field such as free energy and relative helicit
Externí odkaz:
http://arxiv.org/abs/1706.04352
Autor:
Guo, Y., Pariat, E., Valori, G., Anfinogentov, S., Chen, F., Georgoulis, M., Liu, Y., Moraitis, K., Thalmann, J. K., Yang, S.
We study the writhe, twist and magnetic helicity of different magnetic flux ropes, based on models of the solar coronal magnetic field structure. These include an analytical force-free Titov--D\'emoulin equilibrium solution, non force-free magnetohyd
Externí odkaz:
http://arxiv.org/abs/1704.02096
We investigate the decayless regime of coronal kink oscillations recently discovered in the Solar Dynamics Observatory (SDO)/AIA data. In contrast to decaying kink oscillations that are excited by impulsive dynamical processes, this type of transvers
Externí odkaz:
http://arxiv.org/abs/1509.05519
Autor:
Kolobov, D. Y., Kobanov, N. I., Chelpanov, A. A., Kochanov, A. A., Anfinogentov, S. A., Chupin, S. A., Myshyakov, I. I., Tomin, V. E.
In this study we combine the multiwavelength ultraviolet -- optical (Solar Dynamics Observatory, SDO) and radio (Nobeyama Radioheliograph, NoRH) observations to get further insight into space-frequency distribution of oscillations at different atmosp
Externí odkaz:
http://arxiv.org/abs/1505.02857