390 citations · 12k across the 248 of their papers we have counts for
6 papers · 1 filter
The magnetism of the solar interior for a complete MHD solar vision
S. Turck-Chieze, T. Appourchaux, J. Ballot +37
The solar magnetism is no more considered as a purely superficial phenomenon. The SoHO community has shown that the length of the solar cycle depends on the transition region betwe…
On the fine structure of the sunspot penumbrae. III The vertical extension of penumbral filaments
J. M. Borrero, S. K. Solanki, A. Lagg +2
In this paper we study the fine structure of the penumbra as inferred from the uncombed model (flux tube embedded in a magnetic surrounding) when applied to penumbral spectropolari…
On the size distribution of sunspot groups in the Greenwich sunspot record 1874-1976
I. Baumann, S. K. Solanki
We investigate the size distribution of the maximum areas and the instantaneous distribution of areas of sunspot groups using the Greenwich sunspot group record spanning the interv…
Gravity-induced birefringence within the framework of Poincare gauge theory
Oliver Preuss, Sami K. Solanki, M. P. Haugan +1
Gauge theories of gravity provide an elegant and promising extension of general relativity. In this paper we show that the Poincaré gauge theory exhibits gravity-induced birefringe…
On the fine structure of the sunspot penumbrae. II. The nature of the Evershed flow
J. M. Borrero, A. Lagg, S. K. Solanki +1
We investigate the fine structure of the sunspot penumbra by means of a model that allows for a flux tube in horizontal pressure balance with the magnetic background atmosphere in…
Kilo-gauss Magnetic Fields in three DA White Dwarfs
R. Aznar Cuadrado, S. Jordan, R. Napiwotzki +3
We have detected longitudinal magnetic fields between 2 and 4kG in three normal DA white dwarfs (WD0446-790, WD1105-048, WD2359434) out of a sample of 12 by using optical spectr…