A toroidal vortex field as an origin of the narrow mass spectrum of neutron stars
- Authors: Kontorovich V.M.1,2
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Affiliations:
- V.N. Karazin Kharkov National University
- Radio Astronomy Institute
- Issue: Vol 60, No 3 (2016)
- Pages: 322-331
- Section: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/189779
- DOI: https://doi.org/10.1134/S1063772916030094
- ID: 189779
Cite item
Abstract
The evolution and collapse of a gaseous, self-gravitating sphere in the presence of an internal massive toroidal vortex analogous to the vortex created by the toroidal magnetic field of the Sun is considered. When thermal pressure is taken into account, for sufficiently high masses, the instability is preserved even for a polytropic index γ < 4/3. In the case of a degenerate gas, the evolution of the electrons and neutrons differs appreciably. In the ultrarelativistic limit, an interval of stablemasses arises in a neutron gas, between a minimum mass that depends on the circulation velocity in the vortex and the critical mass for the formation of a black hole. This suggests toroidal vortex fields as a possible physical origin for the observed narrow spectrum of neutron-star masses.
Keywords
About the authors
V. M. Kontorovich
V.N. Karazin Kharkov National University; Radio Astronomy Institute
Author for correspondence.
Email: vkont@rian.kharkov.ua
Ukraine, 4 Svobody Sq., Kharkov, 61022; 4 Chervonopraporna St., Kharkov, 61022
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