Long-term XMM-Newton view of magnetar CXOU J010043.1$-$721134: Comprehensive spectral and temporal results

Abstract

We present an in-depth analysis and results of eleven XMM-Newton datasets, spanning 2000 to 2016, of the anomalous X-ray Pulsar CXOU J010043.1$-$721134 which has been classified as a magnetar. We find a spin-period of 8.0275(1) s as of December 2016 and calculate the period derivative to be $(1.76\pm 0.02)\times 10^{-11}$ s s${}^{-1}$, which translate to a dipolar magnetic field strength of $3.8\times 10^{14}$ G and characteristic age of $\sim 7200$ yr for the magnetar. It has a double-peaked pulse profile, with one broad and one narrow peak, in both soft ($0.3-1.3$ keV) and hard ($1.3-8$ keV) energy bands. The pulse fractions in the two energy bands are found to be consistent with constant values. These results are in agreement with previously published results for this source. Although two-component models produce acceptable fits to its energy spectra, single component models are much simpler and are able to explain the similarity of the pulse profiles in the low and high energy bands. We attempt fitting with four different single-component models and find that the best fit to the spectra is obtained by fitting a thermal Comptonization model with the photon index $(\Gamma )$ between $2.0-2.7$ and the electron temperature $(k{T}_e)$ between $0.5-0.9$ keV, for a seed blackbody photon distribution of 0.2 keV. Finally, we conclude by discussing our results briefly.

arXiv comment10 pages, 6 figures, Accepted for publication in MNRAS

References in corpus (47)

• On the Absorption of X-rays in the Interstellar Medium
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• HI4PI: A full-sky HI survey based on EBHIS and GASS
• On characterising the variability properties of X-ray light curves from active galaxies
• Magnetars
• The McGill Magnetar Catalog
• Broad-band gamma-ray and X-ray spectra of NGC 4151 and their implications for physical processes and geometry
• The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
• An exceptionally bright flare from SGR1806-20 and the origins of short-duration gamma-ray bursts
• The May 1989 outburst of the Soft X-ray Transient GS 2023+338 (V404 Cyg)
• Gamma-Ray Observations of a Giant Flare from The Magnetar SGR 1806-20
• A giant, periodic flare from the soft gamma repeater SGR1900+14
• Magnetars: the physics behind observations
• A Major SGR-like Outburst and Rotation Glitch in the No-Longer-So-Anomalous X-ray Pulsar 1E 2259+586
• Magnetar-like X-ray Bursts from an Anomalous X-ray Pulsar
• Bump Cepheids in the Magellanic Clouds: Metallicities, the Distances to the LMC and SMC, and the Pulsation-Evolution Mass Discrepancy
• Changes in the X-ray Emission from the Magnetar Candidate 1E 2259+586 during its 2002 Outburst
• 16 Years of RXTE Monitoring of Five Anomalous X-ray Pulsars
• The outburst decay of the low magnetic field magnetar SGR 0418+5729
• Magnetar outbursts: an observational review
• Resonant cyclotron scattering in magnetars' emission
• Anomalous X-ray Pulsar 1E 1048.1-5937: Pulsed Flux Flares and Large Torque Variations
• A Glitch in an Anomalous X-ray Pulsar
• Detailed high-energy characteristics of AXP 1RXS J170849-400910 - Probing the magnetosphere using INTEGRAL, RXTE and XMM-Newton
• Post-outburst X-ray flux and timing evolution of Swift J1822.3-1606
• Fading of the Transient Anomalous X-ray Pulsar XTE J1810-197
• Radio disappearance of the magnetar XTE J1810-197 and continued X-ray timing
• 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
• Discovery of a Possible Anomalous X-ray Pulsar in the Small Magellanic Cloud
• X-ray Pulsars in the Small Magellanic Cloud
• Constraining the Geometry of the Neutron Star RX J1856.5-3754
• Very deep X-ray observations of the Anomalous X-ray Pulsar 4U 0142+614
• XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar
• NuSTAR Observations of the Magnetar 1E 2259+586
• X-Ray Timing, Spectroscopy and Photometry of the Anomalous X-Ray Pulsar Candidate CXOU J010043.1-721134
• Long-term X-ray changes in the emission from the anomalous X-ray pulsar 4U 0142+61
• Phase-resolved NuSTAR and Swift-XRT Observations of Magnetar 4U 0142+61
• Two new outbursts and transient hard X-rays from 1E 1048.1$-$5937
• AstroSat view of LMC X-2: Evolution of broadband X-ray spectral properties along a complete Z-track
• NuSTAR Observations of Magnetar 1E 1048.1-5937
• Possible Optical Detection of the Anomalous X-ray Pulsar CXOU J010043.1-721134
• A search for the optical counterpart to the magnetar CXOU J010043.1-721134
• Spectral analysis of LMC X-2 with XMM/Newton: unveiling the emission process in the extragalactic Z-source
• X-ray timing studies of the low-field magnetar CXOU J164710.2-455216
• X-ray Monitoring of the Magnetar CXOU J171405.7-381031 in SNR CTB 37B

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