2.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ilia State UniversityGE219 papers
- Instituto de Astrofísica de AndalucíaES90 papers
- Center for Astrophysics Harvard & SmithsonianUS82 papers
- Osservatorio Astrofisico di TorinoIT81 papers
- National Institute for AstrophysicsIT77 papers
- Boston UniversityUS72 papers
- Pulkovo ObservatoryRU71 papers
- Instituto de Astrofísica de CanariasES70 papers
- Space Research InstituteRU70 papers
- Centre National de la Recherche ScientifiqueFR69 papers
- Kansas State UniversityUS69 papers
- St Petersburg UniversityRU69 papers
103 papers · 1 filter
Polytropic stellar wind models with strongly localized heating
L. Westrich, B. Shergelashvili, H. Fichtner +1
Polytropic models of stellar winds remain to be useful tools because they allow for a simple description of the energy balance of the expanding plasma without explicitly specifying…
Infrared spectropolarimetry of a C-class solar flare footpoint plasma -- I. Spectral features and forward modelling
Z. Vashalomidze, C. Quintero Noda, T. V. Zaqarashvili +10
We performed high-spatial resolution spectropolarimetric observations of active region NOAA 13363 during a C-class flare with the Gregor Infrared Spectrograph (GRIS) on 16 July 202…
Gaia20fnr: A binary-lens microlensing event with full orbital motion revealed by four space telescopes
M. Wicker, Ł. Wyrzykowski, M. Hundertmark +49
The microlensing event Gaia20fnr is a long-duration, non-caustic-crossing binary-lens event at high Galactic latitude. Triggered by a photometric rise detected by the Gaia space mi…
Synthesizing Sun-as-a-star flare spectra from high-resolution solar observations
M. De Wilde, A. G. M. Pietrow, M. K. Druett +22
Spatially resolved observations of the Sun and the astronomical sample size of stellar bodies are the respective key strengths of solar and stellar observations. However, the large…
Wide-band fluctuations of solar active regions probed with SHARP magnetograms
G. Dumbadze, B. M. Shergelashvili, M. L. Khodachenko +1
The power spectra of the fluctuation noise of the solar active region (AR) areas and magnetic fluxes sequentially observed in time contain information about their geometrical featu…
Temperature diagnostics of chromospheric fibrils
M. Kriginsky, R. Oliver, D. Kuridze
Context. Chromospheric fibrils are thin and elongated structures that connect nearby photospheric magnetic field concentrations of opposite polarities. Aims. We assess the possibil…
Rossby waves on stellar equatorial beta-planes: uniformly rotating radiative stars
M. Albekioni, T. V. Zaqarashvili, V. Kukhianidze
Rossby waves arise due to the conservation of total vorticity in rotating fluids and may govern the large-scale dynamics of stellar interiors. Recent space missions collected huge…
Dark off-limb gap: manifestation of temperature minimum and dynamic nature of the chromosphere
D. Kuridze, P. Heinzel, J. Koza +1
We study off-limb emission of the lower solar atmosphere using high-resolution imaging spectroscopy in the H and Ca II 8542 Å lines obtained with the CHROMospheric Imaging Spect…
Tidally Forced Planetary Waves in the Tachocline of Solar-like Stars
G. M. Horstmann, G. Mamatsashvili, A. Giesecke +2
Can atmospheric waves in planet-hosting solar-like stars substantially resonate to tidal forcing? Substantially at a level of impacting the space weather or even of being dynamo-re…
Numerical simulations of a two-fluid jet at a magnetic null point in a solar arcade
J. J. González-Avilés, K. Murawski, T. V. Zaqarashvili
We study the formation and evolution of jets in the solar atmosphere using numerical simulations of partially ionized plasma. The two-fluid magnetohydrodynamic equations with ion+e…
Discovery of an optical cocoon tail behind the runaway HD 185806
Z. T. Spetsieri, P. Boumis, A. Chiotellis +6
Studies on the circumstellar structures around evolved stars provide vital information on the evolution of the parent star and the properties of the local interstellar medium. In t…
Categorization model of moving small-scale intensity enhancements in solar active regions
B. M. Shergelashvili, E. Philishvili, S. Buitendag +2
The small-scale moving intensity enhancements remotely observed in the extreme ultraviolet images of the solar active regions, which we refer to as active region moving campfires (…
The Atmospheric Response to High Nonthermal Electron Beam Fluxes in Solar Flares. II. Hydrogen Broadening Predictions for Solar Flare Observations with the Daniel K. Inouye Solar Telescope
Adam F. Kowalski, Joel C. Allred, Mats Carlsson +5
Red-shifted components of chromospheric emission lines in the hard X-ray impulsive phase of solar flares have recently been studied through their 30 s evolution with the high resol…
Measurement of the polytropic index during solar coronal rain using a diagram of the electron density distribution as a function of the electron temperature
Z. M. Vashalomidze, T. V. Zaqarashvili, V. D. Kukhianidze
A differential emission measure (DEM) method is used to evaluate the relationship of the electron density and temperature before and after a coronal rain event during an active sun…
Eruption of prominence triggered by coronal rain in the solar atmosphere observed by SDO/AIA and Stereo/EUVI
Z. M. Vashalomidze, T. V. Zaqarashvili, V. D. Kukhianidze +1
The triggering process for coronal mass ejections (CME) in the solar atmosphere is not fully understood. We use observations from different spacecraft at several wavelengths to det…
Prominence instability and CMEs triggered by massive coronal rain in the solar atmosphere
Z. Vashalomidze, T. V. Zaqarashvili, V. Kukhianidze +3
Triggering process for prominence instability and consequent CMEs is not fully understood. Prominences are maintained by the Lorentz force against the gravity, therefore reduction…
Eigenspectra of solar active region long-period oscillations
G. Dumbadze, B. M. Shergelashvili, S. Poedts +3
We studied the low-frequency h (long-period h) oscillations of active regions (ARs). The investigation is based on an analysis of a time series…
Rieger-type periodicity in the total irradiance of the Sun as a star during solar cycles 23-24
Gurgenashvili, E., Zaqarashvili +11
Context. Total solar irradiance allows for the use of the Sun as a star for studying observations of stellar light curves from recent space missions. Aims. We aim to study how the…
Flare Induced Photospheric Velocity Diagnostics
Aaron J. Monson, Mihalis Mathioudakis, Aaron Reid +2
We present radiative hydrodynamic simulations of solar flares generated by the RADYN and RH codes to study the perturbations induced in photospheric Fe I lines by electron beam hea…
Numerical simulations of macrospicule jets under energy imbalance conditions in the solar atmosphere
J. J. González-Avilés, K. Murawski, A. K. Srivastava +2
Using numerical simulations, we study the effects of thermal conduction and radiative cooling on the formation and evolution of solar jets with some macrospicules features. We init…
Magnetic field inference in active region coronal loops using coronal rain clumps
M. Kriginsky, R. Oliver, P. Antolin +2
Aims. We aim to infer information about the magnetic field in the low solar corona from coronal rain clumps using high-resolution spectropolarimetric observations in the Ca ii 8542…
Chromospheric Heating by MHD Waves and Instabilities
A. K. Srivastava, J. L. Ballester, P. S. Cally +7
The importance of the chromosphere in the mass and energy transport within the solar atmosphere is now widely recognised. This review discusses the physics of magnetohydrodynamic (…
Kink instability of triangular jets in the solar atmosphere
T. V. Zaqarashvili, S. Lomineishvili, P. Leitner +3
It is known that hydrodynamic triangular jets are unstable to antisymmetric kink perturbations. The inclusion of magnetic field may lead to the stabilisation of the jets. Jets and…
Temporal evolution of small-scale internetwork magnetic fields in the solar photosphere
Ryan J. Campbell, Mihalis Mathioudakis, Manuel Collados +5
While the longitudinal field that dominates photospheric network regions has been studied extensively, small scale transverse fields have recently been found to be ubiquitous in th…