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Last Chance (last + chance)

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Physics and Astronomy	100%

Selected Abstracts

Last chance for IYA2009 grants

ASTRONOMY & GEOPHYSICS, Issue 4 2009
Article first published online: 20 JUL 200
The RAS is offering one last chance to apply for grants towards International Year of Astronomy activities, but you'll have to apply soon. [source]

Last chance for JENAM

ASTRONOMY & GEOPHYSICS, Issue 2 2009
Article first published online: 23 MAR 200
No abstract is available for this article. [source]

The lepton asymmetry: the last chance for a critical-density cosmology?

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Issue 4 2001
Julien Lesgourgues
We use a wide range of observations to constrain cosmological models possessing a significant asymmetry in the lepton sector, which offer perhaps the best chance of reconciling a critical-density Universe with current observations. The simplest case, with massless neutrinos, fails to fit many experimental data and does not lead to an acceptable model. If the neutrinos have mass of order 1 eV (which is favoured by some neutrino observations), then models can be implemented which prove a good fit to the microwave anisotropies and large-scale structure data. However, taking into account the latest microwave anisotropy results, especially those from BOOMERANG, we show that the model can no longer accommodate the observed baryon fraction in clusters. Together with the observed acceleration of the present Universe, this puts considerable pressure on such critical-density models. [source]