Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolving neutron star+helium star systems to intermediate-mass binary
  pulsars   Intermediate-mass binary pulsars (IMBPs) are composed of neutron stars (NSs)
and CO/ONe white dwarfs (WDs). It is generally suggested that IMBPs evolve from
intermediate-mass X-ray binaries (IMXBs). However, this scenario is difficult
to explain the formation of IMBPs with orbital periods ($P_{\rm orb}$) less
than 3 d. It has recently been proposed that a system consisting of a neutron
star (NS) and a helium (He) star can form IMBPs with $P_{\rm orb}$ less than 3
d (known as the NS+He star scenario), but previous works can only cover a few
observed sources with short orbital periods. We aim to investigate the NS+He
star scenario by adopting different descriptions of the Eddington accretion
rate ($\dot M_{\rm Edd}$) for NSs and different NS masses ($M_{\rm NS}$)
varying from $1.10\,\rm M_{\odot}$ to $1.80\,\rm M_{\odot}$. Our results can
cover most of the observed IMBPs with short orbital periods and almost half of
the observed IMBPs with long orbital periods. We found that $\dot{M}_{\rm
Edd}$$\propto$$M_{\rm NS}$$^{\rm -1/3}$ could match the observations better
than a specific value for all NSs. We also found that the final spin periods of
NSs slightly decrease with the initial $M_{\rm NS}$. The observed parameters of
PSR J0621+1002, which is one of the well-observed IMBPs whose pulsar mass has
been precisely measured, can be reproduced by the present work.

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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat