Archive for julho 14th, 2011

Type Ia supernovae as stellar endpoints and cosmological tool

quinta-feira, julho 14th, 2011

Êste PDF atualiza a corrente teoria sôbre supernovas fazendo várias modificações. Estudar o texto.

NATURE COMMUNICATIONS| 2:350 | DOI: 10.1038/ncomms1344 |

D. Andrew Howell

© 2011 Macmillan Publishers Limited. All rights reserved.
Published 14 Jun 2011 | DOI: 10.1038/ncomms1344

Resumo: Empirically, Type Ia supernovae are the most useful, precise, and mature tools for determining

astronomical distances. Acting as calibrated candles they revealed the presence of dark energy

and are being used to measure its properties. However, the nature of the Type Ia explosion,

and the progenitors involved, have remained elusive, even after seven decades of research. But

now, new large surveys are bringing about a paradigm shift—we can finally compare samples

of hundreds of supernovae to isolate critical variables. As a result of this, and advances in

modelling, breakthroughs in understanding all aspects of these supernovae are finally starting

to happen