تقرير
On the tension between growth rate and CMB data
| العنوان: | On the tension between growth rate and CMB data |
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| المؤلفون: | Quelle, Alba, Maroto, Antonio L. |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology |
| الوصف: | We analyze the claimed tension between redshift space distorsions measurements of $f(z)\sigma_8(z)$ and the predictions of standard $\Lambda$CDM (Planck 2015 and 2018) cosmology. We consider a dataset consisting of 17 data points extending up to redshift $z=1.52$ and corrected for the Alcock-Paczynski effect. Thus, calculating the evolution of the growth factor in a $w$CDM cosmology, we find that the tension for the best fit parameters $w$, $\Omega_m$ and $\sigma_8$ with respect to the Planck 2018 $\Lambda$CDM parameters is below $2\sigma$ in all the marginalized confidence regions. Comment: 6 pages, 4 figures. Final version to appear in Eur. Phys. J. C |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epjc/s10052-020-7941-7 |
| الوصول الحر: | http://arxiv.org/abs/1908.00900Test |
| رقم الانضمام: | edsarx.1908.00900 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epjc/s10052-020-7941-7 |
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