Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Are galactic rotation curves really flat?   In this paper we identify a new regularity in the systematics of galactic
rotation curves, namely we find that at the last detected points in galaxies of
widely varying luminosity, the centripetal acceleration is found to have the
completely universal form $v^2/R=c^2(\gamma_0+\gamma^{*}N^{*})/2$ where
$\gamma_0$ and $\gamma^{*}$ are new universal constants and $N^{*}$ is the
amount of visible matter in each galaxy. This regularity points to a role for
the linear potentials associated with conformal gravity, with the galaxy
independent $\gamma_0$ term being found to be generated not from within
individual galaxies at all, but rather to be of cosmological origin being due
to the global Hubble flow of a necessarily spatially open Universe of 3-space
scalar curvature $k=-(\gamma_0/2)^2=-2.3 \times 10^{-60}$cm$^{-2}$.

7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int