Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Impact of Uncertainties in Astrophysical Reaction Rates on
  Nucleosynthesis in the $\nu p$ Process   The $\nu p$ process appears in proton-rich, hot matter which is expanding in
a neutrino wind and may be realised in explosive environments such as
core-collapse supernovae or in outflows from accretion disks. The impact of
uncertainties in nuclear reaction cross sections on the finally produced
abundances has been studied by applying Monte Carlo variation of all
astrophysical reaction rates in a large reaction network. As the detailed
astrophysical conditions of the $\nu p$ process still are unknown, a parameter
study was performed, with 23 trajectories covering a large range of entropies
and $Y_\mathrm{e}$. The resulting abundance uncertainties are given for each
trajectory. The $\nu p$ process has been speculated to contribute to the light
$p$ nuclides but it was not possible so far to reproduce the solar isotope
ratios. It is found that it is possible to reproduce the solar
$^{92}$Mo/$^{94}$Mo abundance ratio within nuclear uncertainties, even within a
single trajectory. The solar values of the abundances in the Kr-Sr region
relative to the Mo region, however, cannot be achieved within a single
trajectory. They may still be obtained from a weighted superposition of
different trajectories, though, depending on the actual conditions in the
production site. For a stronger constraint of the required conditions, it would
be necessary to reduce the uncertainties in the 3$\alpha$ and
$^{56}$Ni(n,p)$^{56}$Co rates at temperatures $T>3$ GK.

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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat