The Djorgovski-Gurzadyan dark energy integral equation and the Hubble diagram

被引：3

作者：

Khachatryan, H. G. ^{[1
,2
]}

Stepanian, A. ^{[1
]}

机构：

[1] Alikhanian Natl Lab, Ctr Cosmol & Astrophys, Yerevan, Armenia

[2] Yerevan State Univ, Yerevan, Armenia

来源：

ASTRONOMY & ASTROPHYSICS | 2020年 / 642卷

关键词：

cosmological parameters; cosmology: observations; dark energy; cosmology: theory; GAMMA-RAY BURSTS; SPACE-TELESCOPE; DISCOVERIES; CONSTRAINTS; DYNAMICS;

D O I：

10.1051/0004-6361/202039246

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the observational aspects of the value of dark energy density from quantum vacuum fluctuations based initially on the Gurzadyan-Xue model. We reduce the Djorgovski-Gurzadyan integral equation to a differential equation for the co-moving horizon and then, by means of the obtained explicit form for the luminosity distance, we construct the Hubble diagram for two classes of observational samples. For supernova and gamma-ray burst data we show that this approach provides viable predictions for distances up to z similar or equal to 9, quantitatively at least as good as those provided by the Lambda cold dark matter model. The Hubble parameter dependence H(z) of the two models also reveals mutual crossing at z=0.4018, the interpretation of which is less evident.

引用

页数：4

共 35 条

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