Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the model of the circumgalactic mist: the implications of cloud sizes
  in galactic winds and halos   Ubiquitous detections of cold/warm gas around galaxies indicate that the
circumgalactic medium (CGM) is multiphase and dynamic. Recent state-of-the-art
cosmological galaxy simulations have generally underproduced the column density
of cold halo gas. We argue that this may be due to a mismatch of spatial
resolution in the circumgalactic space and the relevant physical scales at
which the cold gas operates. Using semi-analytic calculations and a set of
magnetohydrodynamic (MHD) simulations, we present a multiphase model of the
gaseous halos around galaxies, the circumgalactic mist (CGm). The CGm model is
based on the idea that the observed cold halo gas may be a composite of cold,
dense and small cloudlets embedded in a hot diffuse halo, resembling
terrestrial clouds and mist. We show that the resulting cold gas from thermal
instabilities conforms to a characteristic column density of $N_{\rm H}\approx
10^{17}\rm{cm^{-2}}$ as predicted by the $c_s t_{\rm cool}$ ansatz. The model
implies a large number of cold clumps in the inner galactic halo with a small
volume filling factor but large covering fraction. The model also naturally
gives rise to spatial extents and differential covering fractions of cold, warm
and hot gas. To self-consistently model the co-evolution of the CGM and star
formation within galaxies, future simulations must address the mismatch of the
spatial resolution and characteristic scale of cold gas.

25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex