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9 papers · 1 filter
Formation of current sheets and sigmoidal structure by the kink instability of a magnetic loop
B. Kliem, V. S. Titov, T. Toeroek
We study dynamical consequences of the kink instability of a twisted coronal flux rope, using the force-free coronal loop model by Titov & Démoulin (1999) as the initial condition…
Ideal kink instability of a magnetic loop equilibrium
T. Toeroek, B. Kliem, V. S. Titov
The force-free coronal loop model by Titov & Démoulin (1999} is found to be unstable with respect to the ideal kink mode, which suggests this instability as a mechanism for the ini…
Coupling between satellite dwarfs and the Milky Way warp
Jeremy Bailin, Matthias Steinmetz
The perturbations of satellite galaxies, in particular the Large Magellanic Cloud (LMC), have been repeatedly proposed and discounted as the cause of the Milky Way warp. While the…
Three-component modeling of C-rich AGB star winds III. Micro-physics of drift-dependent dust formation
C. Sandin, S. Hoefner
A proper treatment of the non-equilibrium dust formation process is crucial in models of AGB star winds. In this paper the micro-physics of this process is treated in detail, with…
The Host Galaxy of GRB 990712
Lise Christensen, Jens Hjorth, Javier Gorosabel +4
We present a comprehensive study of the z=0.43 host galaxy of GRB 990712, involving ground-based photometry, spectroscopy, and HST imaging. The broad-band UBVRIJHKs photometry is u…
Disentangling microlensing and differential extinction in the double QSO HE0512-3329
O. Wucknitz, L. Wisotzki, S. Lopez +1
We present the first separate spectra of both components of the small-separation double QSO HE0512-3329 obtained with HST/STIS in the optical and near UV. The similarities especial…