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64 papers · 1 filter
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…
Konus-Wind and Helicon-Coronas-F Observations of Solar Flares
V. D. Pal'shin, Yu. E. Charikov, R. L. Aptekar +7
Results of solar flare observations obtained in the Konus-Wind experiment from November, 1994 to December, 2013 and in the Helicon Coronas-F experiment during its operation from 20…
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…
Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010
The MAGIC Collaboration, J. Aleksić, S. Ansoldi +251
A flare from the TeV blazar Mrk 421, occurring in March 2010, was observed for 13 consecutive days from radio to very high energy (VHE, E > 100 GeV) gamma-rays with MAGIC, VERITAS,…
A comparison of weak-turbulence and PIC simulations of weak electron-beam plasma interaction
Heather Ratcliffe, Christopher S Brady, Mohammad B Che Rozenan +1
Quasilinear theory has long been used to treat the problem of a weak electron beam interacting with plasma and generating Langmuir waves. Its extension to weak-turbulence theory tr…