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- Centre National de la Recherche ScientifiqueFR640 papers
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8 papers · 2 filters
Neutrino-induced nucleosynthesis and the site of the r-process
W. C. Haxton, K. Langanke, Y. -Z. Qian +1
If the r-process occurs deep within a Type II supernova, probably the most popular of the proposed sites, abundances of r-process elements may be altered by the intense neutrino fl…
A sulphur abundance study of NGC 300 by an empirical calibration method
Tina Christensen, Lars Petersen, Peter Gammelgaard
We propose an empirical sulphur abundance determination method based on the strong sulphur emission lines, [S II] 6716, 6731 and [S III] 9069, 9531 in H II regions. From a compilat…
Are Standard Solar Models Reliable?
John N. Bahcall, M. H. Pinsonneault, Sarbani Basu +1
The sound speeds of solar models that include element diffusion agree with helioseismological measurements to a rms discrepancy of better than 0.2% throughout almost the entire sun…
Large nucleation distances from impurities in the cosmological quark-hadron transition
Michael B. Christiansen, Jes Madsen
We calculate the mean nucleation distance, , in a first order cosmological quark-hadron phase transition. For homogeneous nucleation we find that self-consistent inclusion…
Mixed dark matter with low-mass bosons
Georg B. Larsen, Jes Madsen
We calculate the linear power spectrum for a range of mixed dark matter (MDM) models assuming a massive (few eV) boson, , instead of a neutrino as the hot component. We consider…
Is Her X-1 a strange star?
Jes Madsen
The possible identification of Her X-1 with a strange star (Li et al. 1995) is shown to be incorrect.