73 citations · 884 across the 37 of their papers we have counts for
5 papers · 1 filter
The energy of waves in the photosphere and lower chromosphere: III. Inversion setup for Ca II H spectra in local thermal equilibrium
C. Beck, R. Rezaei, K. G. Puschmann
The Ca II H line is one of the strongest lines in the solar spectrum and provides continuous information on the solar atmosphere from the photosphere to the lower chromosphere. We…
The energy of waves in the photosphere and lower chromosphere: II. Intensity statistics
C. Beck, R. Rezaei, K. G. Puschmann
We investigate the statistics of the intensity distributions as function of the wavelength for Ca II H and the CA II IR line at 854.2 nm to estimate the energy content. We derived…
Comparing simultaneous measurements by two high-resolution imaging spectropolarimeters: the `Goettingen' FPI@VTT and CRISP@SST
N. Bello González, L. Bellot Rubio, A. Ortiz +3
In July 2009, the leading spot of the active region NOAA11024 was observed simultaneously and independently with the 'Goettingen' FPI at VTT and CRISP at SST, i.e., at two differen…
Variation in sunspot properties between 1999 and 2011 as observed with the Tenerife Infrared Polarimeter
R. Rezaei, C. Beck, W. Schmidt
We study the variation in the magnetic field strength and the umbral intensity of sunspots during the declining phase of the solar cycle no.23 and in the beginning of cycle no.24.…
Recent Advances in the Exploration of the Small-Scale Structure of the Quiet Solar Atmosphere: Vortex Flows, the Horizontal Magnetic Field, and the Stokes-V Line-Ratio Method
O. Steiner, R. Rezaei
We review (i) observations and numerical simulations of vortical flows in the solar atmosphere and (ii) measurements of the horizontal magnetic field in quiet Sun regions. First, w…