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8 papers · 2 filters
p, He, and C to Fe cosmic-ray primary fluxes in diffusion models: Source and transport signatures on fluxes and ratios
A. Putze, D. Maurin, F. Donato
The propagated fluxes of proton, helium, and heavier primary cosmic-ray species (up to Fe) are a means to indirectly access the source spectrum of cosmic rays. We check the compati…
Searching for Galactic hidden gas through interstellar scintillation: Results from a test with the NTT-SOFI detector
F. Habibi, Marc Moniez, R. Ansari +1
Aims: Stars twinkle because their light propagates through the atmosphere. The same phenomenon is expected at a longer time scale when the light of remote stars crosses an interste…
Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
LAT Collaboration
Pulsars are rapidly-rotating, highly-magnetized neutron stars emitting radiation across the electromagnetic spectrum. Although there are more than 1800 known radio pulsars, until r…
Local stars formed at z>10: a sample extracted from the SDSS
Luca Sbordone, Piercarlo Bonifacio, Elisabetta Caffau +1
As the Universe emerged from its initial hot and dense phase, its chemical composition was extremely simple, being limited to stable H and He isotopes, and traces of Li. The first…
A high resolution VLT/FLAMES study of individual stars in the centre of the Fornax dwarf spheroidal galaxy
B. Letarte, V. Hill, E. Tolstoy +13
For the first time we show the detailed late-stage chemical evolution history of small nearby dwarf spheroidal galaxy in the Local Group. We present the results of a high resolutio…
Sensitivity analyses of dense cloud chemical models
V. Wakelam, E. Herbst, J. Le Bourlot +3
Because of new telescopes that will dramatically improve our knowledge of the interstellar medium, chemical models will have to be used to simulate the chemistry of many regions wi…