Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Study of Magnetized White Dwarf + Helium Star Binary Evolution to Type
  Ia Supernovae   The white dwarf (WD) + helium (He) star binary channel plays an important
role in the single degenerate scenario for the progenitors of type Ia
supernovae (SNe Ia). Previous studies on the WD + main sequence star evolution
have shown that the magnetic fields of WDs may significantly influence their
accretion and nuclear burning processes. In this work we focus on the evolution
of magnetized WD + He star binaries with detailed stellar evolution and binary
population synthesis (BPS) calculations. In the case of magnetized WDs, the
magnetic fields may disrupt the inner regions of the accretion disk, funnel the
accretion flow onto the polar caps, and even confine helium burning within the
caps.We find that, for WDs with sufficiently strong magnetic fields, the
parameter space of the potential SN Ia progenitor systems shrinks toward
shorter orbital periods and lower donor masses compared with that in the
non-magnetized WD case. The reason is that the magnetic confinement usually
works with relatively high mass transfer rates, which can trigger strong wind
mass loss from the WD, thus limiting the He-rich mass accumulation efficiency.
The surviving companion stars are likely of low-mass at the moment of the SN
explosions, which can be regarded as a possible explanation for the
non-detection of surviving companions after the SNe or inside the SN remnants.
However, the corresponding birthrate of Galactic SNe Ia in our high-magnetic
models is estimated to be ~(0.08-0.13) * 10^{-3} yr^{-1}( ~0.17-0.28 *
10^{-3}yr^{-1} for the non-magnetic models), significantly lower than the
observed Galactic SN Ia birthrate.

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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: q-bio
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org