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65 papers · 1 filter
Photocatalytic Activity of Pulsed Laser Deposited TiO2 Thin Films
H. Lin, Abdul K. Rumaiz, Meghan Schulz +4
Nanostructured TiO2 thin films were prepared by pulsed laser deposition (PLD) on indium doped tin oxide (ITO) substrates. Results from X-ray photoelectron spectroscopy (XPS) show t…
The pulsation modes of the pre-white dwarf PG 1159-035
J. E. S. Costa, S. O. Kepler, D. E. Winget +74
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-0…
Dynamical Simulations of Magnetically Channeled Line-Driven Stellar Winds: II. The Effects of Field-Aligned Rotation
Asif ud-Doula, Stanley Owocki, Richard Townsend
Building upon our previous MHD simulation study of magnetic channeling in radiatively driven stellar winds, we examine here the additional dynamical effects of stellar {\em rotatio…
The prototype colliding-wind pinwheel WR 104
Peter Tuthill, John Monnier, Nicholas Lawrance +3
Results from the most extensive study of the time-evolving dust structure around the prototype "Pinwheel" nebula WR 104 are presented. Encompassing 11 epochs in three near-infrared…
LS I+61 303: microquasar or not microquasar?
G. E. Romero, M. Orellana, A. T. Okazaki +1
LS I +61 303 is a puzzling object detected from radio up to high-energy gamma-rays. Variability has recently been observed in its high-energy emission. The object is a binary syste…
Large voltage from spin pumping in magnetic tunnel junctions
S. T. Chui, Z. F. Lin
We studied the response of a ferromagnet-insulator-normal metal tunnel structure under an external oscillating radio frequency (R.F.) magnetic field. The D. C. voltage across the j…