29 citations · 75 across the 7 of their papers we have counts for
7 papers
Long-Term Oscillations of Sunspots and a Special Class of Artifacts in SOHO(MDI) and SDO(HMI) Data
V. I. Efremov, A. A. Soloviev, L. D. Parfinenko +6
A specific type of artifacts, that originate due to displacement of the image of a moving object along the digital (pixel) matrix of receiver are analyzed in detail. The criteria o…
On the Asymmetric Longitudinal Oscillations of a Pikelner's Model Prominence
J. Kraskiewicz, K. Murawski, A. Solov'ev +1
We present analytical and numerical models of a normal-polarity quiescent prominence that are based on the model of Pikelner (Solar Phys. 1971, 17, 44 ). We derive the general anal…
Torsional Alfven Waves in Solar Magnetic Flux Tubes of Axial Symmetry
K. Murawski, A. Solov'ev, Z. E. Musielak +2
Aims: Propagation and energy transfer of torsional Alfvén waves in solar magnetic flux tubes of axial symmetry is studied. Methods: An analytical model of a solar magnetic flux tub…
Long-Period Oscillations of Sunspots Observed by SOHO/MDI
V. I. Efremov, L. D. Parfinenko, A. A. Solovev +1
We processed magnetograms that were obtained with the Michaelson Doppler Imager onboard the Solar and Heliospheric Observatory (SOHO/MDI). The results confirm the basic properties…
Supergranulation Velocity Field from the MDI (SOHO) Data
L. D. Parfinenko, V. I. Efremov, A. A. Solovev
Long (up to 100 hours) time series of SOHO/MDI Doppler data are analyzed. The power spectrum of radial velocity time series in the quiet photosphere is observed to have, along with…
Identification of large-scale cellular structures on the Sun based on the SDO and PSPT data
V. I. Efremov, L. D. Parfinenko, A. A. Solovev
Three independent sets of data: i). series of filtergrams obtained in line CaII K (393.416 nm) with the ground-based telescope Precision Solar Photometric Telescope (PSPT) of Mauna…