A comparison between the results of applying a ring diagram analysis to two data sets is described in order to check the quality of the two sets and the...
On the Robustness of the Pendulum Model for Large-amplitude Longitudinal Oscillations in Prominences
Large-amplitude longitudinal oscillations (LALOs) in prominences are spectacular manifestations of solar activity. In such events nearby energetic disturbances...
On the RR Lyrae Stars in Globulars. IV. ω Centauri Optical UBVRI Photometry
New accurate and homogeneous optical UBVRI photometry has been obtained for variable stars in the Galactic globular cluster ω Cen (NGC 5139). We secured 8202...
On the RR Lyrae Stars in Globulars. V. The Complete Near-infrared (JHK s ) Census of ω Centauri RR Lyrae Variables
We present a new complete near-infrared (NIR, JHK s ) census of RR Lyrae stars (RRLs) in the globular ω Cen (NGC 5139). We collected 15,472 JHK s images with 4...
On the Saturation of Astrophysical Dynamos: Numerical Experiments with the No-Cosines Flow
In the context of astrophysical dynamos we illustrate that the no-cosines flow, with zero mean helicity, can drive fast dynamo action and we study the dynamo’s...
On the Scaling of the Damping Time for Resonantly Damped Oscillations in Coronal Loops
There is not as yet full agreement on the mechanism that causes the rapid damping of the oscillations observed by TRACE in coronal loops. It has been suggested...
On the search for transition zone lines in late A type stars
Observations of the 1400-1800 A region in late A type stars are presented, which were obtained using the IUE satellite at low and high resolution. The...
On the self-consistency of evolutionary synthesis models
Evolutionary synthesis models have been used to study the physical properties of unresolved populations in a wide range of scenarios. Unfortunately, their self...
On the Sensitivity of Partial Redistribution Scattering Polarization Profiles to Various Atmospheric Parameters
This paper presents a detailed study of the scattering polarization profiles formed under partial frequency redistribution (PRD) in two thermal models of the...