用Gurzadyan-Xue宇宙学校准的伽玛射线暴的哈勃图
Hubble Diagram of Gamma-Rays Bursts calibrated with Gurzadyan-Xue Cosmology
摘要：
伽马射线暴（GRB）是已知宇宙天体中最明亮的天体，如果作为标准烛光使用得当，它对宇宙学研究具有重要的潜力。在本文中，我们测试与伽玛暴的宇宙学预测的暗能量的Gurzadyan-Xue（GX）模型，一种新的理论，预测，没有任何自由参数，目前的真空涨落能量密度接近的值推断SNIa的观测。我们还比较了GX结果与一致性情景$Λ$ -CDM预测的结果。根据Schaefer（2007）的统计方法，在对特定模型进行一致校准后，使用从伽马射线暴观测值获得的几个经验关系，使人们能够探索当前的宇宙学模型。基于这种新方法，我们使用了Schaefer（2007）收集的69个GRB样品;最近发布的SWIFT卫星数据（Sakamoto et al. 2007）以及Rizzuto et al.（2007）收集的41个GRB样品，其中具有更坚定的红移。两个数据样本都跨越了红移约为7的距离尺度。我们证明了GX模型与Schaefer（2007）69 GRB样本的哈勃图是兼容的。这种调整与协调$Λ$ -CDM的调整几乎相同。
英文摘要：
Gamma-ray bursts (GRBs) being the most luminous among known cosmic objects carry an essential potential for cosmological studies if properly used as standard candles. In this paper we test with GRBs the cosmological predictions of the Gurzadyan-Xue (GX) model of dark energy, a novel theory that predicts, without any free parameters, the current vacuum fluctuation energy density close to the value inferred from the SNIa observations. We also compare the GX results with those predicted by the concordance scenario $Λ$-CDM. According to the statistical approach by Schaefer (2007), the use of several empirical relations obtained from GRBs observables, after a consistent calibration for a specific model, enables one to probe current cosmological models. Based on this recently introduced method, we use the 69 GRBs sample collected by Schaefer (2007); and the most recently released SWIFT satellite data (Sakamoto et al. 2007) together with the 41 GRBs sample collected by Rizzuto et al. (2007), which has the more firmly determined redshifts. Both data samples span a distance scale up to redshift about 7. We show that the GX models are compatible with the Hubble diagram of the Schaefer (2007) 69 GRBs sample. Such adjustment is almost identical to the one for the concordance $Λ$-CDM.
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