Document Type
Article
Publication Date
1-1-1999
Abstract
We investigate the dependence of the redshift vs. brightness relation of GRBs upon the width of GRB luminosity function and the cosmological models. The relation is then fit to our observed time dilation data of GRBs. It is found that the best fit average luminosity ranges from L0 = 1.1 ± 0.3 1057 photons s-1 in a standard candle luminosity model to < L > = 8.7 ± 3.6 1057 photons s-1 in a cosmological model with a broad luminosity function φ(L) = C·L-β. Our fits suggest that it is only possible to accomodate the large distance scale suggested by the Star Formation Rate model when the luminosity function has a large width K ∼ 1000 in a cosmological model with low matter density Ω0.
Publication Source (Journal or Book title)
Astronomy and Astrophysics Supplement Series
First Page
515
Last Page
516
Recommended Citation
Deng, M., & Schaefer, B. (1999). Time dilation and the star formation scenario. Astronomy and Astrophysics Supplement Series, 138 (3), 515-516. https://doi.org/10.1051/aas:1999332