Ghisellini 2007 伽玛暴标准烛光关系在宇宙学上的应用

主要内容:
总结了一些标准烛光关系，以及用于作宇宙学的步骤。

精彩摘抄:


文章信息:
arXiv:0705.4472 [ps, pdf, other] : Title: Cosmological implications of Gamma Ray Bursts
Authors: Gabriele Ghisellini (Oss. Astr. di Brera, Italy)
Comments: 8 pages, 4 figures, invited talk at the meeting of the Italian Astron. Society

The discovery that the bolometric energetics (and/or peak luminosity) of Gamma Ray Bursts correlates with their spectral properties has allowed to standardize the burst energetics to such a degree to enable their use for constraining the cosmological parameters, in the same way as SN Ia. With respect to SN Ia, there is the advantage of having sources free from extinction problems, and easily detectable also at large redshifts. On the other hand, these spectral-energy correlations are not yet understood, and bursts with a complete set of information (to standardize their energetics) are still few (two dozens). There have been already attempts to use these bursts to constrain Omega_Lambda and Omega_M, and even the dark energy equation of state. These results are very encouraging.