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A massive helium star with a sufficiently strong magnetic field to form a magnetar

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arxiv 2308.08591 v1 pith:ZEFV457L submitted 2023-08-16 astro-ph.SR astro-ph.HE

T. Shenar , G. A. Wade , P. Marchant , S. Bagnulo , J. Bodensteiner , D. M. Bowman , A. Gilkis , N. Langer
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A.-N. Chene L. Oskinova T. Van Reeth H. Sana N. St-Louis A. Soares de Oliveira H. Todt S. Toonen
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classification astro-ph.SRastro-ph.HE
keywords starsfieldmagneticstarwolf-rayetheliummagnetarmass
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Magnetars are highly magnetized neutron stars; their formation mechanism is unknown. Hot helium-rich stars with spectra dominated by emission lines are known as Wolf-Rayet stars. We observe the binary system HD 45166 using spectropolarimetry, finding that it contains a Wolf-Rayet star with a mass of 2 solar masses and a magnetic field of 43 kilogauss. Stellar evolution calculations indicate that this component will explode as a type Ib or IIb supernova, and the strong magnetic field favors a magnetar remnant. We propose that the magnatized Wolf-Rayet star formed by the merger of two lower mass helium stars.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A Galactic intermediate-mass stripped star with a Wolf-Rayet-like wind

    astro-ph.SR 2026-08 conditional novelty 7.0 of 10

    WR 2-1 is the first unambiguous intermediate-mass stripped star in the Milky Way: a 3-6 solar mass, 60 kK helium-rich companion in a 5.94-day binary with a rapidly rotating O-star.

  2. Axions at the meV Crossroads: Theory, Cosmology, Astrophysics, and Experiments

    hep-ph 2026-03 conditional novelty 2.0 of 10

    The meV axion window is presented as a coherent, cross-validated search program in which string theory, stellar cooling, dark matter, and new detector concepts converge on the same mass range.

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