2001/01/31 by Thomas M. Tauris, Sushan Konar · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics #Diagram #Geophysics and Gravity Measurements #Glitch #High-pressure geophysics and materials #Impurity #Magnetic field #Neutron star #Optics #Phase (matter) #Phase diagram #Physics #Pulsar #Pulsars and Gravitational Waves Research #Quantum mechanics #Statistics #astro-ph
paper · pdf · doi:10.1051/0004-6361:20010988
published as Astron.Astrophys.376:543,2001 · A&A in press, 10 pages, 9 figures, extended discussion of the braking index
arxiv created 2001/07/18 · openalex publication_date 2001/09/01 · arxiv updated 2009/12/01 · openalex created_date 2022/10/05 · openalex updated_date 2026/07/31
We investigate the evolution of pulsars in the diagram. We first present analytical formulae to follow the evolution of a pulsar using simple exponential models for magnetic field decay and alignment. We then compare these evolutionary tracks with detailed model calculations using ohmic decay of crustal neutron star magnetic fields. We find that, after an initial phase with a small braking index, n, pulsars evolve with enhanced torque decay () for about 1 Myr. The long term evolution depends on the impurity parameter of the crust. If impurities are negligible in older isolated pulsars we expect their true age to be approximately equal to their observed characteristic age, . It is not possible from data to constrain model parameters of the neutron star crust.