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- Commonwealth Scientific and Industrial Research OrganisationAU889 papers
- International Centre for Radio Astronomy ResearchAU366 papers
- Centre National de la Recherche ScientifiqueFR342 papers
- Australia Telescope National FacilityAU297 papers
- Netherlands Institute for Radio AstronomyNL257 papers
- Curtin UniversityAU248 papers
- Chinese Academy of SciencesCN238 papers
- Nanjing UniversityCN238 papers
- Max Planck Institute for Radio AstronomyDE231 papers
- National Astronomical ObservatoriesCN219 papers
- The University of SydneyAU206 papers
- ARC Centre of Excellence for All-sky AstrophysicsAU200 papers
14 papers · 2 filters
Probing a massive radio galaxy with gravitational lensing
A. More, J. P. McKean, T. W. B. Muxlow +3
The gravitational lens system CLASS B2108+213 has two lensed images separated by 4.56 arcsec. Such a wide image separation suggests that the lens is either a massive galaxy, or is…
Late stages of the evolution of A-type stars on the main sequence: comparison between observed chemical abundances and diffusion models for 8 Am stars of the Praesepe cluster
L. Fossati, S. Bagnulo, R. Monier +5
Aims. We aim to provide observational constraints on diffusion models that predict peculiar chemical abundances in the atmospheres of Am stars. We also intend to check if chemical…
Energetic radiation and the sulfur chemistry of protostellar envelopes: Submillimeter interferometry of AFGL 2591
A. O. Benz, P. Staeuber, T. L. Bourke +3
CONTEXT: The chemistry in the inner few thousand AU of accreting envelopes around young stellar objects is predicted to vary greatly with far-UV and X-ray irradiation by the centra…
WSRT Ultra-Deep Neutral Hydrogen Imaging of Galaxy Clusters at z=0.2, a Pilot Survey of Abell 963 and Abell 2192
Marc A. W. Verheijen, J. H. van Gorkom, A. Szomoru +3
A pilot study with the powerful new backend of the Westerbork Synthesis Radio Telescope (WSRT) of two galaxy clusters at z=0.2 has revealed neutral hydrogen emission from 42 galaxi…
Recombination Ghosts in Littrow Configuration: Implications for Spectrographs Using Volume Phase Holographic Gratings
Eric B. Burgh, Matthew A. Bershady, Kyle B. Westfall +1
We report the discovery of optical ghosts generated when using Volume Phase Holographic (VPH) gratings in spectrographs employing the Littrow configuration. The ghost is caused by…
Constraints on secondary 10-100 EeV gamma ray flux in the minimal bottom-up model of Ultra High Energy Cosmic Rays
O. Kalashev, G. Gelmini, D. Semikoz
In a recently proposed model the cosmic rays spectrum at energies above EeV can be fitted with a minimal number of unknown parameters assuming that the extragalactic cosmic rays ar…