Long-term evolution of anomalous X-ray pulsars and soft gamma repeaters
arXiv:1601.07846 · doi:10.1093/mnras/stw235
Abstract
We have investigated the long-term evolution of individual anomalous X-ray pulsars (AXPs) and soft gamma repeaters (SGRs) with relatively well constrained X-ray luminosity and rotational properties. In the frame of the fallback disc model, we have obtained the ranges of disc mass and dipole field strength that can produce the observed source properties. We have compared our results with those obtained earlier for dim isolated neutron stars (XDINs). Our results show that (1) the X-ray luminosity, period and period derivative of the individual AXP/SGR sources can be produced self-consistently in the fallback disc model with very similar basic disc parameters to those used earlier in the same model to explain the long-term evolution of XDINs, (2) except two sources, AXP/SGRs are evolving in the accretion phase; these two exceptional sources, like XDINs, completed their accretion phase in the past and are now evolving in the final propeller phase and still slowing down with the disc torques, (3) the dipole field strength (at the poles) of XDINs are in the G range, while AXP/SGRs have relatively strong dipole fields between G, and (4) the source properties can be obtained with large ranges of disc masses which do not allow a clear test of correlation between disc masses and the magnetic dipole fields for the whole AXP/SGRs and XDIN population.
10 pages, 6 figures, Accepted for publication in MNRAS
References in corpus (29)
- A Debris Disk Around An Isolated Young Neutron Star
- 1E 1547.0-5408: a radio-emitting magnetar with a rotation period of 2 seconds
- Magnetars: Properties, Origin and Evolution
- Discovery of luminous pulsed hard X-ray emission from anomalous X-ray pulsars 1RXS J1708-4009, 4U 0142+61 and 1E 2259+586 by INTEGRAL and RXTE
- 16 Years of RXTE Monitoring of Five Anomalous X-ray Pulsars
- Distances to Anomalous X-ray Pulsars using Red Clump Stars
- X-ray coherent pulsations during a sub-luminous accretion disk state of the transitional millisecond pulsar XSS J12270-4859
- Radio emission evolution, polarimetry and multifrequency single pulse analysis of the radio magnetar PSR J1622-4950
- Detailed high-energy characteristics of AXP 4U 0142+61 - Multi-year observations with INTEGRAL, RXTE, XMM-Newton and ASCA
- INTEGRAL survey of the Cassiopeia region in hard X rays
- The Distance and Age of the SNR Kes 73 and AXP 1E 1841-045
- Anomalous X-ray pulsars: Persistent States with Fallback Disks
- The first XMM-Newton observations of the Soft Gamma-ray Repeater SGR 1900+14
- From outburst to quiescence: the decay of the transient Anomalous X-ray Pulsar XTE J1810-197
- X-ray and Near-IR Variability of the Anomalous X-ray Pulsar 1E 1048.1-5937: From Quiescence Back to Activity
- A tale of two populations: Rotating Radio Transients and X-ray Dim Isolated Neutron Stars
- XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar
- Quiescent state and outburst evolution of SGR 0501+4516
- Intensity-hardness correlation and deep infrared observation of the anomalous X-ray pulsar 1RXS J170849-400910
- Quiet but still bright: XMM-Newton observations of the soft gamma-ray repeater SGR 0526-66
- Neutral Hydrogen Absorption Toward XTE J1810-197: the Distance to a Radio-Emitting Magnetar
- On the X-Ray Light Curve, Pulsed-Radio Emission, and Spin Frequency Evolution of the Transient Anomalous X-Ray Pulsar Xte J1810--197 During its X-Ray Outburst
- Long-term evolution of dim isolated neutron stars
- Millisecond Pulsar Scintillation Studies with LOFAR: Initial Results
- Spectral formation in a radiative shock: application to anomalous X-ray pulsars and soft gamma-ray repeaters
- Dim Isolated Neutron Stars, Cooling and Energy Dissipation
- Broad-band X-ray spectra of anomalous X-ray pulsars and soft -ray repeaters: pulsars in a weak-accretion regime ?
- On the X-ray Outbursts of Transient Anomalous X-ray Pulsars and Soft Gamma-ray Repeaters
- Long-term evolution, X-ray outburst and optical/infrared emission of SGR 0501+4516
Cited by in corpus (15)
- Long-period Pulsars as Possible Outcomes of Supernova Fallback Accretion
- Rotational evolution of magnetars in the presence of a fallback disk
- Discovery of 40.5 ks Hard X-ray Pulse-Phase Modulations from SGR 1900+14
- Evolution of the long-period pulsar GLEAM-X J162759.5-523504.3
- On the fallback disk around the slowest isolated pulsar, 1E 1613485055
- On the evolution of high-B radio pulsars with measured braking indices
- Optical excess of dim isolated neutron stars
- Evolution of the long-period pulsar PSR J0901-4046
- Long-term evolution of RRAT J1819-1458
- Central Compact Objects: some of them could be spinning up?
- Rotational and X-ray luminosity evolution of high-B radio pulsars
- On the long-term evolution of rotating radio transients
- Is PSR J0726-2612 a dim isolated neutron star progenitor?
- A note on the anti-glitch of magnetar SGR 1935+2154
- Calvera: A low-mass strangeon star torqued by debris disk?