Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Omega from the COBE-DMR anisotropy maps   We have made a likelihood statistical analysis of the angular correlations in
the {\it COBE}-DMR two-year sky maps by Monte Carlo simulation of the
temperature fluctuations. We assume an open universe and consider as primordial
power spectrum the Harrison-Zeldovich one, $P(k)=Ak$. We find that the flatness
of the universe is not implied by the data. The quadrupole normalization
amplitude, $Q_{rms-PS}$, is related to the density parameter, $\Omega$, by
$Q_{rms-PS} = 10.67 + 55.81 \Omega - 128.59 \Omega^2 + 81.26 \Omega^3\ \mu$K.
We have determined the p.d.f. of $\Omega$ due to cosmic plus sampling (i.e.
$20^\circ$ galactic cut) variance which generically shows a bimodal shape. The
uncertainty as given by the r.m.s. is $\approx 0.35$, therefore to better
constrain $\Omega$ experiments sensitive to higher multipoles ($l>20$) should
be considered.

28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th