24 citations · 27 across the 4 of their papers we have counts for
5 papers · 1 filter
Constraining Gravitational Theories by Observing Magnetic White Dwarfs
Oliver Preuss, Stefan Jordan, Mark P. Haugan +1
Under the assumption of a specific nonminimal coupling of torsion to Under the assumption of a specific nonminimal coupling of torsion to electromagnetism, spacetime is birefringen…
Surface Magnetic Field Distributions of the White Dwarfs PG 1015+014 and HE 1045-0908
F. Euchner, S. Jordan, K. Reinsch +2
We have applied the method of Zeeman tomography to analyze the surface magnetic field structures of the white dwarfs PG 1015+014 and HE 1045-0908 from spin-phase resolved flux and…
The Structure and Origin of Magnetic Fields on Accreting White Dwarfs
K. Reinsch, F. Euchner, K. Beuermann +2
We have started a systematic study of the field topologies of magnetic single and accreting white dwarfs using Zeeman tomography. Here we report on our analysis of phase-resolved f…
Do weak magnetic fields prevent hydrogen from accreting onto metal-line white dwarf stars?
Susanne Friedrich, Stefan Jordan, Detlev Koester
The widely accepted assumption is that metals detected in the spectra of a few cool helium-rich white dwarfs cannot be of primordial origin and therefore must be accreted from the…
On the evolution of shape in N-body simulations
Ch. Theis, R. Spurzem
A database on shape evolution of direct N-body models formed out of cold, dissipationless collapse is generated using GRAPE and HARP special purpose computers. Such models are impo…