Cosmic viscosity as a remedy for tension between PLANCK and LSS data

被引：42

作者：

Anand, Sampurn ^{[1
]}

Chaubal, Prakrut ^{[1
]}

Mazumdar, Arindam ^{[1
]}

Mohanty, Subhendra ^{[1
]}

机构：

[1] Phys Res Lab, Ahmadabad 380009, Gujarat, India

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2017年 / 11期

关键词：

cosmological parameters from CMBR; cosmological parameters from LSS; dark matter theory; power spectrum; DARK-MATTER; SPECTROSCOPIC SURVEY; RADIATION; REDSHIFT; UNIVERSE; PROJECT; LAMBDA; LIGHT; OMEGA;

D O I：

10.1088/1475-7516/2017/11/005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Measurements of sigma(8) from large scale structure observations show a discordance with the extrapolated sigma(8) from Planck CMB parameters using Lambda CDM cosmology. Similar discordance is found in the value of H-0 and Omega(m). In this paper, we show that the presence of viscosity, shear or bulk or combination of both, can remove the above mentioned conflicts simultaneously. This indicates that the data from Planck CMB observation and different LSS observations prefer small but non-zero amount of viscosity in cold dark matter fluid.

引用

页数：16

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