Zobrazeno 1 - 10
of 433
pro vyhledávání: '"Livshits, M."'
Features of the development of activity cycles in the solar-type stars and fast-rotating cool dwarfs have been considered for 65 stars observed in some decades. Cycles with duration of 7-18 years compared to the solar cycle were found for about 50% o
Externí odkaz:
http://arxiv.org/abs/2002.06651
Autor:
Katsova, M. M., Kitchatinov, L. L., Livshits, M. A., Moss, D. L., Sokoloff, D. D., Usoskin, I. G.
Recent data from the Kepler mission has revealed the occurrence of superflares in sun-like stars which exceed by far any observed solar flares in release of energy. A natural idea is that the dynamo mechanism in superflaring stars differs in some res
Externí odkaz:
http://arxiv.org/abs/1710.00015
Autor:
Livshits, M. A., Zimovets, I. V., Golovin, D. V., Nizamov, B. A., Vybornov, V. I., Mitrofanov, I. G., Kozyrev, A. S., Litvak, M. L., Sanin, A. B., Tretyakov, V. I.
The study of nonstationary processes in the Sun is of great interest, and lately, multiwavelength observations and registration of magnetic fields are carried out by means of both ground-based telescopes and several specialized spacecraft (SC) on nea
Externí odkaz:
http://arxiv.org/abs/1706.01116
We study the dependence of the coronal activity index on the star's rotation rate. This question was considered earlier for 824 late-type stars on the basis of a consolidated catalogue of the soft X-ray fluxes. We carry out a more refined analysis se
Externí odkaz:
http://arxiv.org/abs/1609.07989
We analyzed here the connection of superflares and the lithium abundance in G and K stars based on Li abundance determinations conducted with the echelle spectra of a full set of 280 stars obtained with the ELODIE spectrograph. For high-active stars
Externí odkaz:
http://arxiv.org/abs/1609.05793
We have analyzed multi-wavelength observations and magnetic-field data for the solar flare of May 10, 2012 (04:18 UT) and have detected a sign inversion of the signal in the line-of-sight magnetic measurements in the umbra of a small spot. This effec
Externí odkaz:
http://arxiv.org/abs/1604.07073
Autor:
Katsova, M. M., Livshits, M. A.
We analyze new observations of superflares on G-stars discovered in the optical and near IR ranges with the Kepler mission. An evolution of solar-type activity is discussed. We give an estimate of the maximal total energy, $E_{tot} = 10^{34}\;\mbox{e
Externí odkaz:
http://arxiv.org/abs/1508.00254
The diagram of indices of coronal and chromospheric activity allowed us to reveal stars where solar-type activity appears and regular cycles are forming. Using new consideration of a relation between coronal activity and the rotation rate, together w
Externí odkaz:
http://arxiv.org/abs/1505.06480
The aim of the present study is to determine the Li abundances for a large set of the FGK dwarfs and to analyse the connections between the Li content, stellar parameters, and activity. Atmospheric parameters, rotational velocities and Li abundances
Externí odkaz:
http://arxiv.org/abs/1210.6843
Autor:
Selwynraj, A. Immanuel, Iniyan, S., Suganthi, L., Livshits, M., Polonsky, Guy, Kribus, Abraham
Publikováno v:
In Energy Procedia 2014 57:2920-2929
