Long Term Behavior of X-ray Pulsars in the Small Magellanic Cloud

Abstract

Results of a 4 year monitoring campaign of the SMC using the Rossi X-ray timing Explorer (RXTE) are presented. This large dataset makes possible detailed investigation of a significant sample of SMC X-ray binaries. 8 new X-ray pulsars were discovered and a total of 20 different systems were detected. Spectral and timing parameters were obtained for 18. In the case of 10 pulsars, repeated outbursts were observed, allowing determination of candidate orbital periods for these systems. We also discuss the spatial and pulse period distributions of the SMC pulsars.

arXiv commentRevised version accepted for publication in ApJ Supplement. 26 pages text, plus 44 figures, 7 tables, references

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Cited by in corpus (44)

• Be/X-ray binaries
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• High-Mass X-ray binaries in the Small Magellanic Cloud
• Be/X-ray binaries and candidates: catalogue
• Spin period change and the magnetic fields of neutron stars in Be X-ray binaries in the Small Magellanic Cloud
• A Long Look at the Be/X-Ray Binaries of the Small Magellanic Cloud
• Very Long-term Optical Variability of High Mass X-ray Binaries in the SMC
• A Comprehensive Library of X-ray Pulsars in the Small Magellanic Cloud: Time Evolution of their Luminosities and Spin Periods
• Exploring the Small Magellanic Cloud to the Faintest X-ray Fluxes: Source Catalog, Timing and Spectral Analysis
• Deep Chandra survey of the Small Magellanic Cloud. III. Formation efficiency of High-Mass X-ray binaries
• The Chandra survey of the SMC "Bar": II. Optical counterparts of X-ray sources
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• X-ray bright sources in the Chandra Small Magellanic Cloud Wing Survey - detection of two new pulsars
• Optical and X-ray variability of two Small Magellanic Cloud X-ray binary pulsars - SXP46.6 and SXP6.85
• Criteria for Dynamical Timescale Mass Transfer of Metal-poor Intermediate-mass Stars
• Orbital Period Determinations for Four SMC Be/X-ray Binaries
• Photometric Periodicities of Be/X-ray Pulsars in the Small Magellanic Cloud
• Exploring accretion theory with X-ray binaries in the SMC
• High mass X-ray binary SXP18.3 undergoes the longest Type II outburst ever seen in the Small Magellanic Cloud
• X-ray Observations and Infrared Identification of the Transient 7.8 s X-ray Binary Pulsar XTE J1829-098
• The XMM-Newton survey of the Small Magellanic Cloud: Discovery of the 11.866 s Be/X-ray binary pulsar XMMUJ004814.0-732204 (SXP11.87)
• Constraining compactness and magnetic field geometry of X-ray pulsars from the statistics of their pulse profiles
• XMM-Newton observations of the Small Magellanic Cloud: XMMU J004814.1-731003, a 25.55 s Be/X-ray binary pulsar
• XMM-Newton observations of the Small Magellanic Cloud: X-ray outburst of the 6.85 s pulsar XTE J0103-728
• Discovery of the neutron star spin and a possible orbital period from the Be/X-ray binary IGR J05414-6858 in the LMC
• Discovery of SXP265, a Be/X-ray binary pulsar in the Wing of the Small Magellanic Cloud
• An optical & X-ray study of the counterpart to the SMC X-ray binary pulsar system SXP327
• The Effect of Variability on X-Ray Binary Luminosity Functions: Multiple Epoch Observations of NGC 300 with Chandra
• Deep Chandra Survey of the Small Magellanic Cloud. II. Timing Analysis of X-ray Pulsars
• X-ray and optical study of the new SMC X-ray binary pulsar system SXP7.92 and its probable optical counterpart, AzV285
• Be/X-ray binary SXP6.85 undergoes large Type II outburst in the Small Magellanic Cloud
• The X-ray Binary Population of the Nearby Dwarf Starburst Galaxy IC 10: Variable and Transient X-ray Sources
• X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries
• Properties of X-ray Binaries in the Magellanic Clouds from RXTE and Chandra Observations
• A multi-observatory database of X-ray pulsars in the Magellanic Clouds
• The Great Pretenders Among the ULX Class
• Measuring the magnetic dipole moment and magnetospheric fluctuations of SXP 18.3 with a Kalman filter
• In-depth study of long-term variability in the X-ray emission of the Be/X-ray binary system AX J0049.4-7323
• Measuring the magnetic dipole moment and magnetospheric fluctuations of accretion-powered pulsars in the Small Magellanic Cloud with an unscented Kalman filter
• Spectral analysis of SXP59.0 during its 2017 outburst and properties of the soft excess in X-ray binary pulsars
• X-ray and optical monitoring of the December 2017 outburst of the Be/X-ray binary AX J0049.4-7323
• Disentangling the neighbouring pulsars SXP 15.3 and SXP 305
• SXP7.92: A Recently Rediscovered Be/X-ray Binary in the Small Magellanic Cloud, Viewed Edge On
• Monitoring the X-ray Variability of Bright X-ray Sources in M33