8.6k citations
- Centre National de la Recherche ScientifiqueFR640 papers
- The University of SydneyAU475 papers
- University of BirminghamGB381 papers
- University of CopenhagenDK357 papers
- Instituto de Astrofísica de CanariasES341 papers
- Universidad de La LagunaES308 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR304 papers
- California Institute of TechnologyUS282 papers
- Center for Astrophysics Harvard & SmithsonianUS281 papers
- European Southern ObservatoryCL265 papers
- Astrophysique, Instrumentation et ModélisationFR259 papers
- Osservatorio Astronomico di PadovaIT258 papers
17 papers · 2 filters
Extended Ly-alpha emission from a damped Ly-alpha absorber at z = 1.93, and the relation between DLAs and Lyman-break galaxies
J. U. Fynbo, P. Moller, S. J. Warren
The number of damped Ly-alpha absorbers (DLAs) currently known is about 100, but our knowledge of their sizes and morphologies is still very sparse as very few have been detected i…
A search for solar-like oscillations and granulation in alpha Cen A
H. Kjeldsen, T. R. Bedding, S. Frandsen +1
We report the most sensitive search yet made for solar-like oscillations. We observed the star alpha Cen A in Balmer-line equivalent widths over six nights with both the 3.9m Anglo…
Helioseismic analysis of the hydrogen partition function in the solar interior
S. Basu, W. Dappen, A. Nayfonov
The difference in the adiabatic gradient gamma_1 between inverted solar data and solar models is analyzed. To obtain deeper insight into the issues of plasma physics, the so-called…
Possible Constraints on the Time Variation of the Fine Structure Constant from Cosmic Microwave Background Data
Steen Hannestad
The formation of the cosmic microwave background radiation (CMBR) provides a very powerful probe of the early universe at the epoch of recombination. Specifically, it is possible t…
Spectroscopy of the roAp star Alpha-Cir -- II. The bisector and equivalent-width of the H-alpha line
I. K. Baldry, M. Viskum, T. R. Bedding +2
We present bisector measurements of the H-alpha line of the rapidly oscillating Ap (roAp) star, Alpha-Cir, obtained from dual-site observations with medium-dispersion spectrographs…
Physics and Astrophysics of Strange Quark Matter
Jes Madsen
3-flavor quark matter (strange quark matter; SQM) can be stable or metastable for a wide range of strong interaction parameters. If so, SQM can play an important role in cosmology,…