| Автор | Savas Nesseris |
| Дата выпуска | 2007-05-01 |
| dc.description | A comparative analysis of three recent and reliable SnIa datasets available in the literature was made: the Full Gold (FG) dataset (157 data points 0 < z < 1.75), a Truncated Gold (TG) dataset (140 data points 0 < z < 1) and the most recent Supernova Legacy Survey (SNLS) dataset (115 data points 0 < z < 1). It was found that the best fit dynamical w(z) obtained from the SNLS dataset does not cross the PDL (w −1) and remains above and close to the w −1 line for the whole redshift range 0 < z < 1. In contrast, the best fit dynamical w(z) obtained from the Gold datasets (FG and TG) clearly crosses the PDL and departs significantly from the w −1 line, while the LCDM parameter values are about 2 σ away from the best fit w(z), however not excluding it. Also for the Gold dataset a scalar-tensor theory was tested, for which the best fit form of w(z) was also found to cross the phantom divide line. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2007 IOP Publishing Ltd |
| Название | Constraints on dark energy models from the Legacy and Gold SnIa datasets |
| Тип | paper |
| DOI | 10.1088/1742-6596/68/1/012056 |
| Electronic ISSN | 1742-6596 |
| Print ISSN | 1742-6588 |
| Журнал | Journal of Physics: Conference Series |
| Том | 68 |
| Первая страница | 12056 |
| Последняя страница | 12063 |
| Аффилиация | Savas Nesseris; University of Ioannina, Physics Department Theoretical Physics Division Ioannina, Greece |
| Выпуск | 1 |
