Chandra Observations of the Anomalous X-Ray Pulsar 4U 0142+61

@article{Patel2002ChandraOO,
  title={Chandra Observations of the Anomalous X-Ray Pulsar 4U 0142+61},
  author={S. Patel and C. Kouveliotou and P. Woods and A. Tennant and M. Weisskopf and M. Finger and C. Wilson-Hodge and E. Goğuş and M. Klis and T. Belloni},
  journal={The Astrophysical Journal},
  year={2002},
  volume={587},
  pages={367-372}
}
We present X-ray imaging, timing, and phase-resolved spectroscopy of the anomalous X-ray pulsar 4U 0142+61 using the Chandra X-Ray Observatory. The spectrum is well described by a power-law plus blackbody model with Γ = 3.35(2), kTBB = 0.458(3) keV, and NH = 0.91(2) × 1022 cm-2; we find no significant evidence for spectral features (0.5-7.0 keV). Time-resolved X-ray spectroscopy shows evidence for evolution in phase in either Γ, kTBB, or some combination thereof as a function of pulse phase. We… Expand
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