A multi-observatory database of X-ray pulsars in the Magellanic Clouds

Abstract

Using hundreds of XMM-Newton and Chandra archival observations and nearly a thousand RXTE observations, we have generated a comprehensive library of the known pulsars in the Small and Large Magellanic Clouds (SMC, LMC). The pulsars are detected multiple times across the full parameter spaces of X-ray luminosity ($L_X=10^{31-38}$~erg/s) and spin period ( P$<$1s -- P$>$1000s) and the library enables time-domain studies at a range of energy scales. The high time-resolution and sensitivity of the EPIC cameras are complemented by the angular resolution of Chandra and the regular monitoring of RXTE. Our processing %$\sim$15 year pipeline uses the latest calibration files and software to generate a suite of useful products for each pulsar detection: event lists, high time-resolution light curves, periodograms, spectra, and complete histories of $\dot{P}$, the pulsed fraction, etc., in the broad (0.2-12 keV), soft (0.2-2 keV), and hard (2-12 keV) energy bands. After combining the observations from these telescopes, we found that 28 pulsars show long-term spin up and 25 long-term spin down. We also used the faintest and brightest sources to map out the lower and upper boundaries of accretion-powered X-ray emission: the propeller line and the Eddington line, respectively. We are in the process of comparing the observed pulse profiles to geometric models of X-ray emission in order to constrain the physical parameters of the pulsars. Finally we are preparing a public release of the library so that it can be used by others in the astronomical community.

arXiv comment6 pages, 6 figures

References in corpus (17)

• An Ultraluminous X-ray Source Powered by An Accreting Neutron Star
• High Mass X-ray Binaries as a Star Formation Rate Indicator in Distant Galaxies
• Gravitational Bending of Light Near Compact Objects
• The Carnegie Hubble Program: The Distance and Structure of the SMC as Revealed by Mid-infrared Observations of Cepheids
• High-Mass X-ray binaries in the Small Magellanic Cloud
• Optical properties of SMC X-ray binaries
• Star formation history and X-ray binary populations: the case of the Small Magellanic Cloud
• Spin period change and the magnetic fields of neutron stars in Be X-ray binaries in the Small Magellanic Cloud
• Star-formation history and X-ray binary populations: the case of the Large Magellanic Cloud
• Catalogue of Be/X-ray binary systems in the Small Magellanic Cloud: X-ray, optical & IR properties
• Spectral distribution of Be/X-ray binaries in the Small Magellanic Cloud
• On the orbital parameters of Be/X-ray binaries in the Small Magellanic Cloud
• Review of Discrete X-Ray Sources in the Small Magellanic Cloud: Summary of the ASCA Results and Implication on the Recent Star Forming Activity
• Long Term Behavior of X-ray Pulsars in the Small Magellanic Cloud
• Exploring the Small Magellanic Cloud to the Faintest X-ray Fluxes: Source Catalog, Timing and Spectral Analysis
• The Chandra survey of the SMC "Bar": II. Optical counterparts of X-ray sources
• XMM-Newton observations of the Small Magellanic Cloud: XMMU J004814.1-731003, a 25.55 s Be/X-ray binary pulsar

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• Black Holes and Neutron Stars in Nearby Galaxies: Insights from NuSTAR
• Multiwavelength Characterization of the High Mass X-ray Binary Population of M33
• Constraints on the number of X-ray Pulsars in IC 10 from a deep XMM-Newton Observation