Internal Heating in Magnetars: Role of Electron Captures

2022/09/01 by N. Chamel, Nicolas Chamel, A. F. Fantina +7
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph.HE #nucl-th

paper · pdf · doi:10.1088/1742-6596/2340/1/012029

published as J. Phys.: Conf. Ser. 2340 012029 (2022) · 6 pages, 1 figure. Contribution to the proceedings of the XLIV Brazilian Workshop on Nuclear Physics

openalex publication_date 2022/09/01 · arxiv created 2022/10/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29 · arxiv updated 2026/07/31

Abstract

Abstract The role of electron captures by nuclei in the shallow heating of magnetars is further investigated using both nuclear measurements and the theoretical atomic mass table HFB-27. Starting from the composition of the outer crust in full equilibrium, we have calculated the onset of electron captures and the heat released due to the slow decay of the magnetic field. Numerical results are found to be similar to those previously obtained with the HFB-24 atomic mass model and are consistent with neutron-star cooling data.

Citations

• Magnetic, thermal and rotational evolution of isolated neutron stars
• Onset of Electron Captures and Shallow Heating in Magnetars

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