Browse by author
Lookup NU author(s): Dr Andrei IgoshevORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Magnetic field evolution of neutron stars is a long-standing debate. The rate of magnetic field decay for isolated, non-accreting neutron stars can be quantified by measuring the negative second derivative of the spin period. Alternatively, this rate can be estimated by observing an excess of thermal emission with respect to the standard cooling without additional heating mechanisms involved. One of the nearby cooling isolated neutron stars - RX J0720.4-3125, - offers a unique opportunity to probe the field decay as for this source there are independent measurements of the surface X-ray luminosity, the second spin period derivative, and magnetic field. We demonstrate that the evolution rate of the spin period derivative is in correspondence with the rate of dissipation of magnetic energy of the dipolar field if a significant part of the released energy is emitted in X-rays. The instantaneous time-scale for the magnetic field decay is ∼104 yr.
Author(s): Igoshev AP, Popov SB
Publication type: Article
Publication status: Published
Journal: Monthly Notices of the Royal Astronomical Society: Letters
Year: 2024
Volume: 535
Issue: 1
Pages: 54-57
Print publication date: 01/11/2024
Online publication date: 04/10/2024
Acceptance date: 01/10/2024
Date deposited: 22/01/2025
ISSN (print): 1745-3925
ISSN (electronic): 1745-3933
Publisher: Oxford University Press
URL: https://doi.org/10.1093/mnrasl/slae094
DOI: 10.1093/mnrasl/slae094
Data Access Statement: No new data is generated in the article beside numbers presented in Table 1.
Altmetrics provided by Altmetric
