Spin period change and the magnetic fields of neutron stars in Be X-ray binaries in the Small Magellanic Cloud
arXiv:1311.4343 · doi:10.1093/mnras/stt2192
Abstract
We report on the long-term average spin period, rate of change of spin period and X-ray luminosity during outbursts for 42 Be X-ray binary systems in the Small Magellanic Cloud. We also collect and calculate parameters of each system and use these data to determine that all systems contain a neutron star which is accreting via a disc, rather than a wind, and that if these neutron stars are near spin equilibrium, then over half of them, including all with spin periods over about 100 s, have magnetic fields over the quantum critical level of 4.4x10^13 G. If these neutron stars are not close to spin equilibrium, then their magnetic fields are inferred to be much lower, of the order of 10^6-10^10 G, comparable to the fields of neutron stars in low-mass X-ray binaries. Both results are unexpected and have implications for the rate of magnetic field decay and the isolated neutron star population.
22 pages, 50 figures; to appear in MNRAS
References in corpus (5)
- The ATNF Pulsar Catalogue
- Discovery of a flux-related change of the cyclotron line energy in Her X-1
- A Long Look at the Be/X-Ray Binaries of the Small Magellanic Cloud
- Spectral distribution of Be/X-ray binaries in the Small Magellanic Cloud
- New Gamma Cas-like objects: X-ray and optical observations of SAO49725 and HD161103
Cited by in corpus (70)
- Cyclotron lines in highly magnetized neutron stars
- Propeller effect in action in the ultraluminous accreting magnetar M82 X-2
- NICER and Fermi GBM Observations of the First Galactic Ultraluminous X-ray Pulsar Swift J0243.6+6124
- The radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources
- The ultra luminous X-ray source NuSTAR J095551+6940.8: A magnetar in a high mass X-ray binary
- SMC X-3: the closest ultraluminous X-ray source powered by a neutron star with non-dipole magnetic field
- Be X-ray binaries in the SMC as indicators of mass transfer efficiency
- Star-formation history and X-ray binary populations: the case of the Large Magellanic Cloud
- The Ups & Downs of Accreting X-Ray Pulsars: Decade-long observations with the Fermi Gamma-Ray Burst Monitor
- Catalogue of Be/X-ray binary systems in the Small Magellanic Cloud: X-ray, optical & IR properties
- Multiwavelength monitoring and X-ray brightening of Be X-ray binary PSR J2032+4127/MT91 213 on its approach to periastron
- An ultraluminous nascent millisecond pulsar
- Observatory science with eXTP
- The 2016 super-Eddington outburst of SMC X-3: X-ray and optical properties and system parameters
- A Comprehensive Library of X-ray Pulsars in the Small Magellanic Cloud: Time Evolution of their Luminosities and Spin Periods
- Swift observations of SMC X-3 during its 2016-2017 super-Eddington outburst
- SXP 5.05 = IGR J00569-7226 : using X-rays to explore the structure of a Be stars circumstellar disk
- Spectral and Timing Nature of the Symbiotic X-ray Binary 4U 1954+319: The Slowest Rotating Neutron Star in an X-ray Binary System
- Accreting, highly magnetized neutron stars at the Eddington limit: A study of the 2016 outburst of SMC X-3
- The First Year of S-CUBED: The Swift Small Magellanic Cloud Survey
- Super-Strong Magnetic Fields of Neutron Stars in Be X-Ray Binaries Estimated with New Torque and Magnetosphere Models
- Application of the Ghosh & Lamb Relation to the Spin-up/down Behavior in the X-ray Binary Pulsar 4U 1626-67
- A multi-wavelength study of SXP 1062, the long period X-ray pulsar associated with a supernova remnant
- How to make a mature accreting magnetar
- Spin equilibrium in strongly-magnetized accreting stars
- NuSTAR discovery of an unusually steady long-term spin-up of the Be binary 2RXP J130159.6-635806
- On the magnetic fields of Be/X-ray pulsars in the Small Magellanic Cloud
- Discovery of a 26.2 day period in the long-term X-ray light curve of SXP 1323: a very short orbital period for a long spin period pulsar
- Accreting magnetars: linking ultraluminous X-ray pulsars and the slow pulsation X-ray pulsars
- Accretion mode of the Ultra-Luminous X-ray source M82 X-2
- Did GW170817 harbor a pulsar?
- Catalog of the Galactic population of X-ray pulsars in High-mass X-ray binary systems
- Deep Chandra Survey of the Small Magellanic Cloud. II. Timing Analysis of X-ray Pulsars
- On the Magnetic Fields of Ultraluminous X-ray Pulsars
- Exploring the role of X-ray reprocessing and irradiation in the anomalous bright optical outbursts of A0538-66
- Early neutron star evolution in high-mass X-ray binaries
- Tracking hidden magnetospheric fluctuations in accretion-powered pulsars with a Kalman filter
- Diversity Of Short Gamma-Ray Burst Afterglows From Compact Binary Mergers Hosting Pulsars
- Swift J0513.4-6547 = LXP 27.2 : a new Be/X-ray binary system in the Large Magellanic Cloud
- High-Mass X-Ray Binaries with Be Donors as Ultraluminous X-Ray Sources
- A multi-observatory database of X-ray pulsars in the Magellanic Clouds
- The SMC X-ray binary SXP4.78 : a new Type II outburst and the identification and study of the optical counterpart
- X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries
- Soft excess in the quiescent Be/X-ray pulsar RX J0812.4-3114
- Multi-wavelength observations of the Be/X-ray binary IGR J01217-7257 (=SXP 2.16) during outburst
- On the Bimodal Spin Period Distribution of Be/X-ray Pulsars
- Measuring the magnetic dipole moment and magnetospheric fluctuations of SXP 18.3 with a Kalman filter
- Retrograde discs around one component of a binary are unstable to tilting
- Comprehensive Analysis of the Transient X-ray Pulsar MAXI J1409-619
- Spectral properties of the soft excess pulsar RX J0059.2-7138 during its 2013 outburst
- In-depth study of long-term variability in the X-ray emission of the Be/X-ray binary system AX J0049.4-7323
- SXP214, an X-ray Pulsar in the Small Magellanic Cloud, Crossing the Circumstellar Disk of the Companion
- Observational constraints on the magnetic field of the bright transient Be/X-ray pulsar SXP 4.78
- Observing Rayleigh-Taylor stable and unstable accretion through a Kalman filter analysis of X-ray pulsars in the Small Magellanic Cloud
- Measuring the magnetic dipole moment and magnetospheric fluctuations of accretion-powered pulsars in the Small Magellanic Cloud with an unscented Kalman filter
- RXTE & Swift Observations of SWIFT J0513.4--6547
- Spectral analysis of SXP59.0 during its 2017 outburst and properties of the soft excess in X-ray binary pulsars
- Constraints on the number of X-ray Pulsars in IC 10 from a deep XMM-Newton Observation
- A rare outburst from the stealthy BeXRB system Swift J0549.7-6812
- An X-ray and optical study of the outbursting behaviour of the SMC Be X-ray binary SXP 91.1
- The nature of the X-ray pulsar in M31: an intermediate mass X-ray binary?
- Study on the magnetic field of the ultraluminous X-ray pulsar RX J0209.6-7427
- Monte-Carlo simulations on possible collimation effects of outflows to fan-beamed emission of ultraluminous accreting X-ray pulsars
- Long-term spin-down and low luminosity regime in the Be/X-ray binary pulsar GX 304-1
- MAD-Accretion Scenario in High-Mass X-Ray Binaries with Neutron Stars
- A possible origin of the Galactic Center magnetar SGR 1745-2900
- Studying magnetic fields of ultraluminous X-ray pulsars using different accretion torques
- Studies of Cepheus X-4 during 2018 outburst observed with AstroSat
- SXP 15.6 -- an accreting pulsar close to spin equilibrium?
- Astrophysical parameters of LS 437 and the nature of X0726-260