arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.5319astro-ph.COgr-qc
收藏

伽马射线暴Ep,i-Eiso关联的宇宙学独立刻度

A cosmological independent calibration of the Ep,i-Eiso correlation for Gamma Ray Bursts

Salvatore Capozziello, Luca Izzo

摘要:

伽马射线暴的发射各向同性能量与\nuF ν谱静止标架峰值能量的关系(阿马蒂关系),严格依赖于宇宙学模型,所以我们需要一种方法来获得一个独立的校准它。使用联盟超新星Ia目录,我们得到了y轴上的宇宙学光度距离,红移,并证明这种参数化近似非常好的基准标准comsomlogical模型\LambdaCDM。此外,通过这个宇宙学光度距离d1,有可能实现与宇宙学模型无关的阿马蒂关系。我们得到的宇宙学Amati关系在误差上与文献中提出的其他宇宙学独立校准一致。这可以被认为是一个很好的迹象,以期获得标准烛光的伽马射线暴关键词。伽马射线:爆发-宇宙学

英文摘要:

The relation connecting the emitted isotropic energy and the rest-frame peak energy of the \nuFνspectra of Gamma-Ray Bursts (the Amati relation), strictly depends on the cosmological model, so we need a method to obtain an independent calibration of it. Using the Union Supernovae Ia catalog, we obtain a cosmographic luminosity distance in the y-redshift and demonstrate that this parametrization approximates very well the fiducial standard comsomlogical model \LambdaCDM. Furthermore, by this cosmographic luminosity distance dl, it is possible to achieve the Amati relation independent on the cosmological model. The cosmographic Amati relation that we obtain agrees, in the errors, with other cosmological-independent calibrations proposed in the literature. This could be considered a good indication in view to obtain standard candles by Gamma-Ray Bursts Key words. Gamma rays : bursts - Cosmology

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑