89 citations · 120 across the 4 of their papers we have counts for
4 papers
The roAp star Circini as seen by BRITE-Constellation
W. W. Weiss, H. -E. Fröhlich, A. Pigulski +25
We report on an analysis of high-precision, multi-colour photometric observations of the rapidly-oscillating Ap (roAp) star Cir. These observations were obtained with the BRITE…
The solar differential rotation in the 18th century
R. Arlt, H. -E. Froehlich
The sunspot drawings of Johann Staudacher of 1749--1799 were used to determine the solar differential rotation in that period. These drawings of the full disk lack any indication o…
Estimating meteor rates using Bayesian inference
Geert Barentsen, Rainer Arlt, Hans-Erich Fröhlich
A method for estimating the true meteor rate λ from a small number of observed meteors n is derived. We employ Bayesian inference with a Poissonian likelihood function. We discuss…
Magnetic activity and differential rotation in the very young star KIC 8429280
A. Frasca, H. -E. Fröhlich, A. Bonanno +3
We present a spectroscopic/photometric analysis of the rapid rotator KIC8429280, discovered by ourselves as a very young star and observed by the Kepler mission. We use spectroscop…