37 citations · 69 across the 6 of their papers we have counts for
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Refined reduction and standardisation of 53 years of UBV photometry at Hvar
Hrvoje Božić, Petr Harmanec, Miroslav Brož +17
Emission-line stars classified as Be exhibit light and colour variability on various timescales, ranging from days to decades. Their evolution must be constrained by long-term obse…
Bošković's Spherical Trigonometric Solution for Determining the Axis and Rate of Solar Rotation by Observing Sunspots in 1777
Mirko Husak, Roman Brajša, Dragan Špoljarić +5
In September 1777 Ruđer Bošković observed and measured the sun-spot positions to determine the solar rotation elements. In 1785, among other methods, he described a trigonometric s…
Bošković's method for determining the axis and rate of solar rotation by observing sunspots in 1777
Mirko Husak, Roman Brajša, Dragan Špoljarić +5
In 1777 Ruđer Bošković observed sunspots, determined their positions and the solar rotation elements by his own methods briefly described here. We repeat his calculations of the me…
Long-term, orbital, and rapid variations of the Be star V923 Aql = HD 183656
M. Wolf, P. Harmanec, H. Božić +9
We present the latest results of a long-term observational project aimed at observing, collecting from the literature, and homogenising the light, colour, and spectral variations o…
Meridional Motions and Reynolds Stress Determined by Using Kanzelhöhe Drawings and White Light Solar Images from 1964 to 2016
Domagoj Ruždjak, Davor Sudar, Roman Brajša +6
Sunspot position data obtained from Kanzelhöhe Observatory for Solar and Environmental Research (KSO) sunspot drawings and white light images in the period 1964 to 2016 were used t…
A Relationship between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups
Domagoj Ruždjak, Roman Brajša, Davor Sudar +2
The sunspot position from Greenwich Photoheliographic Results (GPR), US Air Force Solar Optical Observing Network and National Oceanic and Atmospheric Administration (USAF/NOAA), a…