Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The contribution of the Warm-Hot Intergalactic Medium to the CMB
  anisotropies via the Sunyaev-Zeldovich effect   Cosmological hydrodynamical simulations predict that a large fraction of all
baryons reside within mildly non-linear structures with temperatures in the
range $10^{5}-10^{7}$K. As the gas is highly ionized, it could be detected by
the temperature anisotropies generated on the Cosmic Microwave Background
radiation. We refine our previous estimates of the thermal Sunyaev-Zeldovich
effect by introducing a non-polytropic equation of state to model the
temperature distribution of the shock heated gas derived from
temperature-density phase diagrams of different hydrodynamical simulations.
Depending on the specific model, the Comptonization parameter varies in the
range $10^{-7}\le y_c \le 2\times 10^{-6}$, compatible with the FIRAS upper
limit. This amplitude is in agreement with a simple toy model constructed to
estimate the average effect induced by filaments of ionized gas. Using the
log-normal probability density function we calculate the correlation function
and the power spectrum of the temperature anisotropies generated by the WHIM
filaments. For a wide range of the parameter space, the maximum amplitude of
the radiation power spectrum is $(\ell+1)\ell C_{\ell}/2\pi =0.7-70(\mu K)^2$
at $\ell \approx 200-500$. This amplitude scales with baryon density, Hubble
constant and the amplitude of the matter power spectrum $\sigma_8$ as
$[(\ell+1)\ell C_\ell]_{\mathrm{max}}/2\pi \propto \sigma_8^{2.6}(\Omega_b
h)^2$. Since the thermal Sunyaev-Zeldovich effect has a specific frequency
dependence, we analyze the possibility of detecting this component with the
forthcoming Planck data.

26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat