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Pulsar Glitch Behaviour and AXPs, SGRs and DTNs

2001/12/13 by M. Ali Alpar, M. A. Alpar, Alpar, M. Ali
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Geomagnetism and Paleomagnetism Studies #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0112306

10 pages, Contribution to the Jan van Paradijs Memorial Meeting, to be published in the ASP Conference series

arxiv created 2001/12/13 · openalex publication_date 2001/12/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Large pulsar glitches seem to be common to all radio pulsars and to exhibit a universal behaviour connecting the rate of occurrence, event size and interglitch relaxation that can be explained if the glitches are due to angular momentum exchange in the neutron star. This has implications for the energy dissipation rate. The large timing excursions observed in SGRs are not similar to the pulsar glitches. The one glitch observed in an AXP is very similar to pulsar glitches and demonstrates that typical neutron star glitch response occurs when the external torque is constant for an extended period of time. In the long run the timing variations of both the AXPs and the SGRs are much stronger than the timing noise of radio pulsars but comparable with the behaviour of accreting sources. For the DTNs, the thermal luminosities do not seem compatible with cooling ages and statistics if these sources are magnetars. The energy dissipation rates implied by the dynamical behaviour of glitching pulsars will provide the luminosities of the DTNs under propeller spindown torques supplied by fossil disks on neutron stars with conventional 1012 G dipole magnetic fields.

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