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Evolutionary Status of Long-Period Radio Pulsars

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Abstract

We consider the evolutionary status of the recently discovered long-period radio sources PSR J0901-4046, GLEAM-X J1627-52, and GPM J1839-10. It is hypothesized that all three sources are radio pulsars. Within the framework of standard scenarios, it is thought that for the pulsar mechanism to operate, it is necessary to exclude the penetration of external matter into the light cylinder, which corresponds to the ejector stage. We show that for realistic properties of the interstellar medium the 76-second pulsar J0901-4046 must be at this stage, whereas the sources GLEAM-X J1627-52 and GPM J1839-10 with periods \({\gtrsim}1000\) s can be at this stage only in the case of unrealistically high dipolar magnetic fields \({\gtrsim}10^{16}\) G. We also show that sources with periods \({\sim}100\) s and magnetic fields \({\lesssim}10^{13}\) G cannot be ejectors in a realistic interstellar medium. Thus, we predict that long-period radio pulsars with standard magnetic fields will not be discovered.

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Fig. 1
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Notes

  1. We will present our detailed modeling of the evolution of isolated NSs with long initial periods and their properties at the accretion stage in a separate publication.

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ACKNOWLEDGMENTS

A.V. Biryukov thanks D.Z. Wiebe for the consultations on the distribution of the interstellar medium in the Galaxy.

Funding

This work was supported by RSF grant no. 21-12-00141.

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Authors and Affiliations

  1. Faculty of Physics, Moscow State University, 119991, Moscow, Russia

    M. D. Afonina

  2. Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia

    M. D. Afonina, A. V. Biryukov & S. B. Popov

  3. Faculty of Physics, National Research University ‘‘Higher School of Economics’’, 101100, Moscow, Russia

    A. V. Biryukov

  4. Institute of Physics, Kazan Federal University, 420000, Kazan, Russia

    A. V. Biryukov

  5. ICTP—Abdus Salam International Center for Theoretical Physics, Trieste, Italy

    S. B. Popov

Authors
  1. M. D. Afonina
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  2. A. V. Biryukov
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  3. S. B. Popov
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Correspondence to M. D. Afonina or S. B. Popov.

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Translated by V. Astakhov

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Afonina, M.D., Biryukov, A.V. & Popov, S.B. Evolutionary Status of Long-Period Radio Pulsars. Astron. Lett. 49, 553–559 (2023). https://doi.org/10.1134/S1063773723090013

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  • DOI: https://doi.org/10.1134/S1063773723090013

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