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Cooling Radius vs. Absorption Size of Galaxies |
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| Authors: | Milan M Ćirković Srdjan Samurović Aleksandra Djorić |
| Institution: | (1) Dept. of Physics & Astronomy, SUNY at Stony Brook, Stony Brook, NY, 11794-3800, U.S.A.;(2) Dipartimento di Astronomia, Università di Trieste, Via Tiepolo 11, I-34131 Trieste, Italy;(3) IRITEL Institute, Batajnicki drum 23, Zemun, 11080, Serbia |
| Abstract: | The discussion of the relationship between cooling radius in two-phaseadiabatic halo models and observationally established maximal radiusof absorption in luminous galaxies at low redshift is presented. It isof paramount importance that any viable model of the halo is able toreproduce empirical value of the absorption cross-section of normalgalaxies and its scaling with luminosity. Several ways for bringingthe theoretical and observational values into agreement are outlined.It is of great methodological importance to fully assess the difficultiesany model is likely to encounter when testing predicted extent ofabsorption and column density distribution against recently obtainedlow-redshift Ly absorption data. |
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