http://arxiv.org/abs/1911.03413
We investigate a contribution of the Jeans smoothing to the minimal width of Ly$\alpha$ forest lines and discuss how the accounting for this additional broadening affects the inferred parameters of the intergalactic matter equation of state. We estimate a power-law index $\gamma$ of the equation of state, a temperature at the mean density $T_0$ and a hydrogen photoionization rate $\Gamma$ within 4 redshift bins. Furthermore, in each bin we obtain an upper limit on the scale-parameter $f_{\rm J}$, which sets the relation between the Jeans length and the characteristic physical size of the absorber clouds.
K. Telikova, S. Balashev and P. Shternin
Mon, 11 Nov 19
49/105
Comments: 6 pages, 4 figures, 1 table; to appear in proceedings of the International Conference PhysicA.Spb/2019, St. Petersburg, October 22-24, 2019