output
19972026
most citedThe Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III

2.5k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2012 · astro-ph.SRShow all

7 papers · 2 filters

astro-ph.SR2012★ 56 cited

Torsional Alfvén waves in solar partially ionized plasma: effects of neutral helium and stratification

T. V. Zaqarashvili, M. L. Khodachenko, R. Soler

Ion-neutral collisions may lead to the damping of Alfven waves in chromospheric and prominence plasmas. Neutral helium atoms enhance the damping in certain temperature interval, wh…

astro-ph.SR2012★ 17 cited

Low-frequency variations of unknown origin in the Kepler Delta Scuti star KIC 5988140 = HD 188774

P. Lampens, A. Tkachenko, H. Lehmann +9

We used high-quality Kepler photometry and spectroscopic data to investigate the Kepler binary candidate KIC 5988140. Using the spectrum synthesis method, we derived the fundamenta…

astro-ph.SR2012★ 26 cited

Kelvin-Helmholtz instability of kink waves in photospheric twisted flux tubes

I. Zhelyazkov, T. V. Zaqarashvili

We investigate conditions under which kink magnetohydrodynamic waves propagating along photospheric uniformly twisted flux tubes with axial mass flows become unstable as a conseque…

astro-ph.SR2012★ 20 cited

Investigation of the Differential Rotation by H-Alpha Filaments and Long-Lived Magnetic Features for Solar Activity Cycles 20 and 21

M. Sh. Gigolashvili, D. R. Japaridze, V. J. Kukhianidze

For solar activity cycles 20 and 21 (1966-1985) the solar differential rotation has been investigated using Hα filaments and relatively small-scale long-lived magnetic features wit…

astro-ph.SR2012★ 24 cited

Observation of standing kink waves in solar spicules

H. Ebadi, T. V. Zaqarashvili, I. Zhelyazkov

We analyze the time series of CaII H-line obtained from Hinode/SOT on the solar limb. The time-distance analysis shows that the axis of spicule undergos quasi-periodic transverse d…

astro-ph.SR2012★ 34 cited

Cut-off wavenumber of Alfven waves in partially ionized plasmas of the solar atmosphere

T. V. Zaqarashvili, M. Carbonell, J. L. Ballester +1

Alfven wave dynamics in partially ionized plasmas of the solar atmosphere shows that there is indeed a cut-off wavenumber, i.e. the Alfven waves with wavenumbers higher than the cu…

astro-ph.SR2012★ 84 cited

Transverse oscillations in chromospheric mottles

D. Kuridze, R. J. Morton, R. Erdélyi +4

A number of recent investigations have revealed that transverse waves are ubiquitous in the solar chromosphere. The vast majority of these have been reported in limb spicules and a…