Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing for dynamics of dark energy and curvature of universe with
  latest cosmological observations   We use the newly released 182 Type Ia supernova data combined with the
third-year Wilkinson Microwave Anisotropic Probe data (WMAP3) and large scale
structure (LSS) information including SDSS and 2dFGRS to constrain the dark
energy equation of state (EoS) as well as the curvature of universe $\Omega_K$.
Using the full dataset of Cosmic Microwave Background (CMB) and LSS rather than
the shift parameter and linear growth factor, we make a Markov Chain Monte
Carlo (MCMC) global fit, while paying particular attention to the dark energy
perturbation. Parameterizing the EoS as $w_{DE}(a) = w_{0} + w_{1}(1-a)$, we
find the best fit of ($w_0,w_1$) is ($-1.053,0.944$) and for $w_{DE}(a) = w_{0}
+ w_{1}\sin({3/2}\pi \ln(a))$, the best fit for ($w_0,w_1$) is
($-1.614,-1.046$). We find that a flat universe is a good approximation,
namely, $|\Omega_K|>0.06$ has been excluded by 2$\sigma$ yet the inclusion of
$\Omega_K$ can affect the measurement of DE parameters owing to their
correlation and the present systematic effects of SNIa measurements.

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The categories of this paper are: q-alg
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci