54 citations · 577 across the 35 of their papers we have counts for
35 papers
Horizontal motions in sunspot penubrae
Michal Sobotka, Klaus G. Puschmann
High-resolution observations of horizontal motions in the penumbra are needed to complement the concept of penumbrae obtained from spectropolarimetry. Time series of intensity imag…
IRIS observations of chromospheric heating by acoustic waves in solar quiet and active regions
V. Abbasvand, M. Sobotka, M. Švanda +3
Aims: To study the heating of solar chromospheric magnetic and nonmagnetic regions by acoustic and magnetoacoustic waves, the deposited acoustic-energy flux derived from observatio…
Evolution and motions of magnetic fragments during the active region formation and decay: A statistical study
Michal Švanda, M. Sobotka, L. Mravcová +1
Context: The evolution of solar active regions is still not fully understood. The growth and decay of active regions have mostly been studied in case-by-case studies. Aims: Instead…
Observational study of chromospheric heating by acoustic waves
V. Abbasvand, M. Sobotka, M. Švanda +9
Aims. To investigate the role of acoustic and magneto-acoustic waves in heating the solar chromosphere, observations in strong chromospheric lines are analyzed by comparing the dep…
High-resolution spectroscopy of a surge in an emerging flux region
M. Verma, C. Denker, A. Diercke +6
High-spectral resolution observations using the VTT echelle spectrograph in the chromospheric H line were obtained in the early growth phase of active region NOAA 12722. Noise-s…
Chromospheric Heating by Acoustic Waves Compared to Radiative Cooling: II -- Revised Grid of Models
Vahid Abbasvand, Michal Sobotka, Petr Heinzel +4
Acoustic and magnetoacoustic waves are considered to be possible agents of chromospheric heating. We present a comparison of deposited acoustic energy flux with total integrated ra…