A pulsar-helium star compact binary system formed by common envelope evolution

Fuente: arXiv

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Bibliographic Details
Main Authors:	Yang, Z. L., Han, J. L., Zhou, D. J., Jing, W. C., Chen, W. C., Wang, T., Li, X. D., Wang, S., Wang, B., Ge, H. W., Guo, Y. L., Li, L. H., Shao, Y., Liu, J. F., Su, W. Q., Hou, L. G., Huang, W. J., Jiang, J. C., Jiang, P., Sun, J. H., Wang, B. J., Wang, C., Wang, H. G., Wang, J. B., Wang, N., Wang, P. F., Wang, S. Q., Xu, H., Xu, J., Xu, R. X., Yan, W. M., Yan, Y., You, X. P., Yu, D. J., Yuan, Z. S., Zhang, C. F.
Format:	Preprint
Published:	2025
Subjects:	High Energy Astrophysical Phenomena
Online Access:	Acceder al recurso
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_version_	1866918029882818560
author	Yang, Z. L. Han, J. L. Zhou, D. J. Jing, W. C. Chen, W. C. Wang, T. Li, X. D. Wang, S. Wang, B. Ge, H. W. Guo, Y. L. Li, L. H. Shao, Y. Liu, J. F. Su, W. Q. Hou, L. G. Huang, W. J. Jiang, J. C. Jiang, P. Sun, J. H. Wang, B. J. Wang, C. Wang, H. G. Wang, J. B. Wang, N. Wang, P. F. Wang, S. Q. Xu, H. Xu, J. Xu, R. X. Yan, W. M. Yan, Y. You, X. P. Yu, D. J. Yuan, Z. S. Zhang, C. F.
author_facet	Yang, Z. L. Han, J. L. Zhou, D. J. Jing, W. C. Chen, W. C. Wang, T. Li, X. D. Wang, S. Wang, B. Ge, H. W. Guo, Y. L. Li, L. H. Shao, Y. Liu, J. F. Su, W. Q. Hou, L. G. Huang, W. J. Jiang, J. C. Jiang, P. Sun, J. H. Wang, B. J. Wang, C. Wang, H. G. Wang, J. B. Wang, N. Wang, P. F. Wang, S. Q. Xu, H. Xu, J. Xu, R. X. Yan, W. M. Yan, Y. You, X. P. Yu, D. J. Yuan, Z. S. Zhang, C. F.
contents	A stellar common envelope occurs in a binary system when the atmosphere of an evolving star expands to encompass an orbiting companion object. Such systems are predicted to evolve rapidly, ejecting the stellar envelope and leaving the companion in a tighter orbit around a stripped star. We used radio timing to identify a pulsar, PSR J1928+1815, with a spin period of 10.55 ms in a compact binary system with an orbital period of 3.60 hours. The companion star has 1.0 to 1.6 solar masses, eclipses the pulsar for about 17% of the orbit, and is undetected at other wavelengths, so it is most likely a stripped helium star. We interpret this system as having recently undergone a common envelope phase, producing a compact binary.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_15896
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	A pulsar-helium star compact binary system formed by common envelope evolution Yang, Z. L. Han, J. L. Zhou, D. J. Jing, W. C. Chen, W. C. Wang, T. Li, X. D. Wang, S. Wang, B. Ge, H. W. Guo, Y. L. Li, L. H. Shao, Y. Liu, J. F. Su, W. Q. Hou, L. G. Huang, W. J. Jiang, J. C. Jiang, P. Sun, J. H. Wang, B. J. Wang, C. Wang, H. G. Wang, J. B. Wang, N. Wang, P. F. Wang, S. Q. Xu, H. Xu, J. Xu, R. X. Yan, W. M. Yan, Y. You, X. P. Yu, D. J. Yuan, Z. S. Zhang, C. F. High Energy Astrophysical Phenomena A stellar common envelope occurs in a binary system when the atmosphere of an evolving star expands to encompass an orbiting companion object. Such systems are predicted to evolve rapidly, ejecting the stellar envelope and leaving the companion in a tighter orbit around a stripped star. We used radio timing to identify a pulsar, PSR J1928+1815, with a spin period of 10.55 ms in a compact binary system with an orbital period of 3.60 hours. The companion star has 1.0 to 1.6 solar masses, eclipses the pulsar for about 17% of the orbit, and is undetected at other wavelengths, so it is most likely a stripped helium star. We interpret this system as having recently undergone a common envelope phase, producing a compact binary.
title	A pulsar-helium star compact binary system formed by common envelope evolution
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2505.15896