| Автор | Cao, Li |
| Дата выпуска | 2003-08-01 |
| dc.description | We use the magnitude-redshift relation for the type Ia supernova data compiled by Riess et al. to analyze the Cardassian expansion scenario. This scenario assumes the universe to be flat, matter dominated, and accelerating, but contains no vacuum contribution. The best fitting model parameters are H<sub>0</sub> = 65.3 ksm<sup>-1</sup> Mpc<sup>-1</sup>, n = 0.35 and Ω<sub>m</sub> = 0.05. When the highest redshift supernova, SN 1997ck, is excluded, H<sub>0</sub> remains the same, but n becomes 0.20 and Ω<sub>m</sub>, 0.15, and the matter density remains unreasonably low. Our result shows that this particular scenario is strongly disfavoured by the SNeIa data. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2003 IOP Publishing Ltd |
| Название | A Check on the Cardassian Expansion Model with Type-Ia Supernovae Data |
| Тип | paper |
| DOI | 10.1088/1009-9271/3/4/341 |
| Print ISSN | 1009-9271 |
| Журнал | Chinese Journal of Astronomy and Astrophysics |
| Том | 3 |
| Первая страница | 341 |
| Последняя страница | 346 |
| Аффилиация | Cao, Li; National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 |
| Выпуск | 4 |
