Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The ROSAT Deep Cluster Survey: Constraints on Cosmology   We use the ROSAT Deep Cluster Survey (RDCS) to trace the evolution of the
cluster abundance out to $z\simeq 0.8$ and constrain cosmological models. We
resort to a phenomenological prescription to convert masses into $X$-ray fluxes
and apply a maximum-likelihood approach to the RDCS redshift- and
luminosity-distribution. We find that, even changing the shape and the
evolution on the $L_{bol}$-$T_X$ relation within the observational
uncertainties, a critical density Universe is always excluded at more than
$3\sigma$ level. By assuming a non-evolving $X$-ray luminosity-temperature
relation with shape $L_{bol}\propto T_X^3$, it is
$\Omega_m=0.35^{+0.35}_{-0.25}$ and $\sigma_8=0.76^{+0.38}_{-0.14}$ for flat
models, with uncertainties corresponding to $3\sigma$ confidence levels.

17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci