Properties of oscillatory motions in a facular region
R Kostik, E Khomenko - Astronomy & Astrophysics, 2013 - aanda.org
Aims. We study the properties of waves in a facular region of moderate strength in the
photosphere and chromosphere. Our aim is to statistically analyse the wave periods, power …
photosphere and chromosphere. Our aim is to statistically analyse the wave periods, power …
Magnetohydrodynamic waves driven by p-modes
E Khomenko, IC Santamaria - Journal of Physics: Conference …, 2013 - iopscience.iop.org
Waves are observed at all layers of the solar atmosphere and the magnetic field plays a key
role in their propagation. While deep down in the atmosphere the p-modes are almost …
role in their propagation. While deep down in the atmosphere the p-modes are almost …
Spatial distribution of oscillations in faculae
NI Kobanov, VA Pulyaev - Solar Physics, 2011 - Springer
We find that oscillations of the LOS velocity in Hα vary within facula regions. The power
spectra show that the contributions of low-frequency modes (1.2–2 mHz) increase at the …
spectra show that the contributions of low-frequency modes (1.2–2 mHz) increase at the …
Influence of the magnetic field on oscillation spectra in solar faculae
We study oscillation parameters in faculae above magnetic knots and in the areas adjacent
to them. Using Solar Dynamics Observatory (SDO) data, we analyse oscillations in magnetic …
to them. Using Solar Dynamics Observatory (SDO) data, we analyse oscillations in magnetic …
Oscillations above sunspots and faculae: height stratification and relation to coronal fan structure
Oscillation properties in two sunspots and two facular regions are studied using Solar
Dynamics Observatory (SDO) data and ground-based observations in the Si i 10827Å and …
Dynamics Observatory (SDO) data and ground-based observations in the Si i 10827Å and …
Characteristics of oscillations in magnetic knots of solar faculae
The characteristics of oscillations of the intensity, magnetic field, andDoppler velocity in
facular magnetic knots are compared with those at the facula periphery, where the magnetic …
facular magnetic knots are compared with those at the facula periphery, where the magnetic …
Characteristics of oscillatory-wave processes in solar structures with various magnetic field topology
NI Kobanov, DY Kolobov, AA Sklyar, SA Chupin… - Astronomy reports, 2009 - Springer
Recognizing that waves play an important role in energy-exchange processes between
layers of the solar atmosphere, and that the characteristics of propagating waves are …
layers of the solar atmosphere, and that the characteristics of propagating waves are …
Oscillations Accompanying a He i 10830 Å Negative Flare in a Solar Facula
AA Chelpanov, NI Kobanov - Solar Physics, 2018 - Springer
On 21 September 2012, we carried out spectral observations of a solar facula in the Si i
10827 Å, He i 10830 Å, and H α \upalpha spectral lines. Later, in the process of analyzing …
10827 Å, He i 10830 Å, and H α \upalpha spectral lines. Later, in the process of analyzing …
Oscillations in solar faculae. III. The phase relations between chromospheric and photospheric line-of-sight velocities
NI Kobanov, AS Kustov, SA Chupin, VA Pulyaev - Solar Physics, 2011 - Springer
An analysis of line-of-sight velocity oscillation in nine solar faculae was undertaken with the
aim of studying phase relations between chromospheric (He i 10830 Å line) and …
aim of studying phase relations between chromospheric (He i 10830 Å line) and …
The role of faculae in wave-energy transfer to upper layers of the solar atmosphere: Observations
NI Kobanov, AS Kustov, VA Pulyaev, SA Chupin - Astronomy reports, 2011 - Springer
The properties of Doppler-velocity oscillations in solar faculae are analyzed at the
photospheric level (based on Fe I 6569 Å and Fe I 8536 Å lines) and chromospheric level …
photospheric level (based on Fe I 6569 Å and Fe I 8536 Å lines) and chromospheric level …