1.1k citations
- Centre National de la Recherche ScientifiqueFR14 papers
- Imperial College LondonGB11 papers
- Leibniz Institute for Astrophysics PotsdamDE10 papers
- Technische Universität BerlinDE8 papers
- Universität InnsbruckAT7 papers
- Max Planck Institute for the Physics of Complex SystemsDE6 papers
- Max Planck SocietyDE6 papers
- University College LondonGB6 papers
- Carl von Ossietzky Universität OldenburgDE5 papers
- Columbia UniversityUS5 papers
- Humboldt-Universität zu BerlinDE5 papers
- Perm State UniversityRU5 papers
39 papers · 1 filter
Revised element abundances for WC-type central stars
H. Todt, G. Gräfener, W. -R. Hamann
According to previous spectral analyses of Wolf-Rayet type central stars, late [WC] subtypes show systematically higher carbon-to-helium abundance ratios than early [WC] subtypes.…
Determining element abundances of [WC]-type Central Stars for probing stellar evolution and nucleosynthesis
H. Todt, M. Peña, W. -R. Hamann +1
[WC]-type CSPNs are hydrogen-deficient Central Stars of Planetary Nebulae showing strong stellar winds and a carbon-rich chemistry. We have analyzed new high-resolution spectra of…
Quantum-limited position measurements of a dark matter-wave soliton
Antonio Negretti, Carsten Henkel, Klaus Molmer
We show that the position of a dark matter-wave soliton can be determined with a precision that scales with the atomic density as . This surpasses the standard shot-noise…
Non-linear force-free field modeling of a solar active region around the time of a major flare and coronal mass ejection
C. J. Schrijver, M. L. DeRosa, T. Metcalf +14
Solar flares and coronal mass ejections are associated with rapid changes in field connectivity and powered by the partial dissipation of electrical currents in the solar atmospher…
Phase-dependent X-ray observations of the beta Lyrae system: No eclipse in the soft band
R. Ignace, L. M. Oskinova, W. L. Waldron +2
We report on observations of the eclipsing and interacting binary beta Lyrae from the Suzaku X-ray telescope. This system involves an early B star embedded in an optically and geom…
The role of Surface Plasmon modes in the Casimir Effect
F. Intravaia, A. Lambrecht
In this paper we study the role of surface plasmon modes in the Casimir effect. First we write the Casimir energy as a sum over the modes of a real cavity. We may identify two sort…