Jeans smoothing of the Ly forest absorption lines

Autor:	K. N. Telikova, S. A. Balashev, P. S. Shternin
Rok vydání:	2019
Předmět:	Physics History Cosmology and Nongalactic Astrophysics (astro-ph.CO) Absorption spectroscopy FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Astrophysics::Galaxy Astrophysics Smoothing Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 1400:022024
ISSN:	1742-6596 1742-6588
Popis:	We investigate a contribution of the Jeans smoothing to the minimal width of Ly$��$ 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 $��$ of the equation of state, a temperature at the mean density $T_0$ and a hydrogen photoionization rate $��$ 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. 6 pages, 4 figures, 1 table; to appear in proceedings of the International Conference PhysicA.Spb/2019, St. Petersburg, October 22-24, 2019
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cbf367f0397787f5c3e859024e31468 https://doi.org/10.1088/1742-6596/1400/2/022024 Zobrazit plný text záznamu