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264 papers · 1 filter
The Tycho-Gaia astrometric solution. How to get 2.5 million parallaxes with less than one year of Gaia data
Daniel Michalik, Lennart Lindegren, David Hobbs
Context. The first release of astrometric data from Gaia will contain the mean stellar positions and magnitudes from the first year of observations, and proper motions from the com…
The structure of protoplanetary discs around evolving young stars
Bertram Bitsch, Anders Johansen, Michiel Lambrechts +1
The formation of planets with gaseous envelopes takes place in protoplanetary accretion discs on time-scales of several millions of years. Small dust particles stick to each other…
Quantitative X-Ray Phase-Contrast Microtomography from a Compact Laser Driven Betatron Source
J. Wenz, S. Schleede, K. Khrennikov +5
X-ray phase-contrast imaging has recently led to a revolution in resolving power and tissue contrast in biomedical imaging, microscopy and materials science. The necessary high spa…
Resonant inelastic x-ray scattering spectrometer with 25 meV resolution at Cu K-edge
Didem Ketenoglu, Manuel Harder, Konstantin Klementiev +6
An unparalleled resolution is reported with an inelastic x-ray scattering instrument at the Cu K-edge. Based on a segmented concave analyzer, featuring single crystal quartz (SiO_{…
Tunnel spectroscopy of Majorana bound states in topological superconductor-quantum dot Josephson junctions
Guang-Yao Huang, Martin Leijnse, Karsten Flensberg +1
We theoretically investigate electronic transport through a junction where a quantum dot (QD) is tunnel coupled on both sides to semiconductor nanowires with strong spin-orbit inte…
Characterizing the High-Velocity Stars of RAVE: The Discovery of a Metal-Rich Halo Star Born in the Galactic Disk
K. Hawkins, G. Kordopatis, G. Gilmore +21
We aim to characterize high-velocity (HiVel) stars in the solar vicinity both chemically and kinematically using the fourth data release of the RAdial Velocity Experiment (RAVE). W…