Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Redback/Black Widow Systems as progenitors of the highest neutron star
  masses and low-mass Black Holes   We suggest in this note that "spider" systems are the naturally expected
progenitors of the highest neutron star masses, and possibly low-mass black
holes, based on their long-term evolutionary features and actual mass
measurements.

24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio