Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Evidence of a Solitonic Core of $10^{9}M_\odot$ in the Milky
  Way   A wavelike solution for the non-relativistic universal dark matter (wave-DM)
is rapidly gaining interest, following distinctive predictions of pioneering
simulations of cosmic structure as an interference pattern of coherently
oscillating bosons. A prominent solitonic standing wave is predicted at the
center of every galaxy, representing the ground state, that has been identified
with the wide, kpc scale dark cores of common dwarf-spheroidal galaxies,
providing a boson mass of, $\simeq 10^{-22}$ eV. A denser soliton is predicted
for Milky Way sized galaxies where momentum is higher, so the de Broglie scale
of the soliton is smaller, $\simeq 100$ pc, of mass $\simeq 10^9 M_\odot$. Here
we show the central motion of bulge stars in the Milky Way implies the presence
of such a dark core, where the velocity dispersion rises inversely with radius
to a maximum of $\simeq 130$ km/s, corresponding to an excess central mass of
$\simeq 1.5\times 10^9 M_\odot$ within $\simeq 100$ pc, favouring a boson mass
of $\simeq 10^{-22}$ eV. This quantitative agreement with such a unique and
distinctive prediction is therefore strong evidence for a light bosonic
solution to the long standing Dark Matter puzzle, such as the axions generic in
String Theory.

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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con