Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraint on the cosmic age from the solar $r$-process abundances   The cosmic age is an important physical quantity in cosmology. Based on the
radiometric method, a reliable lower limit of the cosmic age is derived to be
$15.68\pm 1.95$ Gyr by using the $r$-process abundances inferred for the solar
system and observations in metal-poor stars. This value is larger than the
latest cosmic age $13.813\pm 0.058$ Gyr from Planck 2013 results, while they
still agree with each other within the uncertainties. The uncertainty of $1.95$
Gyr mainly originates from the error on thorium abundance observed in
metal-poor star CS 22892-052, so future high-precision abundance observations
on CS 22892-052 are needed to understand this age deviation.

18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg