Shahnawaz A. Adil, Maria G. Dainotti and Anjan A. Sen
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引用次数: 0
摘要
哈勃常数 H0 张力是本地探测器、Ia 超新星和宇宙微波背景辐射之间的张力。这种紧张关系已经持续了几十年,并继续困惑着科学界。在这里,我们增加了中间红移探测器,如伽马射线暴(GRB)和类星体(QS0s),以检验这些更高红移探测器是否以及在多大程度上可以缓解这种紧张关系。我们使用了瞬发峰值光度、高原发射结束时的光度及其静止帧持续时间之间的三维基面关系。我们发现GRB本征参数的变化趋势与之前Pantheon-Plus本征参数的变化趋势相似。我们发现 GRB 固有参数 b 存在明显的 3.14σ 张力。事实上,这种张力消失了,参数实际上在 2.26σ 范围内是兼容的。另一个有趣的问题是,三维关系在结合 Pantheon Plus 的超新星数据时发挥了重要作用,这种明显的差异表明了对选择偏差和红移演化进行校正的重要性。加入红移演化校正后,在调整校正参数时,GRB张力减小到了2.26σ。我们预计,随着数据量的增加,在更精确地计算出全球记录暴的演化参数后,这种张力迹象可能会消失。
Revisiting the concordance ΛCDM model using Gamma-Ray Bursts together with supernovae Ia and Planck data
The Hubble constant, H0, tension is the tension among the local probes, Supernovae Ia, and the Cosmic Microwave Background Radiation. This tension has persisted for decades and continues to puzzle the community. Here, we add intermediate redshift probes, such as Gamma-Ray Bursts (GRB) and Quasars (QS0s), to check if and to what extent these higher redshift probes can reduce this tension. We use the three-dimensional fundamental plane relation among the prompt peak luminosity, the luminosity at the end of the plateau emission, and its rest frame duration. We find similar trend in GRB intrinsic parameters as previously seen in Pantheon-Plus intrinsic parameters. We find an apparent 3.14σ tension for the GRB intrinsic parameter b. Indeed, this tension disappears and the parameters are actually compatible within 2.26σ. Another interesting point is that the 3D relation plays an important role in conjunction with Supernovae data with Pantheon Plus and that this apparent discrepancy shows the importance of the correction for selection biases and redshift evolution. The incorporation of redshift evolution correction results in a reduction of the GRB tension to 2.26σ when adjusting correction parameters. We envision that with more data this indication of tension will possibly disappear when the evolutionary parameters of GRBs are computed with increased precision.
期刊介绍:
Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.