Discovery of a transient magnetar: XTE J1810-197

  title={Discovery of a transient magnetar: XTE J1810-197},
  author={Arlan Ibrahim Ibrahim and C. B. Markwardt and J. Swank and S. Ransom and M. Roberts and V. Kaspi and P. Woods and S. Safi-Harb and S. Balman and W. Parke and C. Kouveliotou and K. Hurley and T. Cline},
  journal={The Astrophysical Journal},
We report the discovery of a new X-ray pulsar, XTE J1810-197, that was serendipitously discovered on 2003 July 15 by the Rossi X- Ray Timing Explorer (RXTE) while observing the soft gamma repeater SGR 1806-20. The pulsar has a 5.54 s spin period, a soft X-ray spectrum (with a photon index of ≈4), and is detectable in earlier RXTE observations back to 2003 January but not before. These show that a transient outburst began between 2002 November 17 and 2003 January 23 and that the source's… Expand
Evolution of the X-ray Properties of the Transient Magnetar XTE J1810-197
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Radio disappearance of the magnetar XTE J1810-197 and continued X-ray timing
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In 2003, the magnetar XTE J1810-197 started an outburst that lasted until early 2007. In the following 11 years, the source stayed in a quiescent/low activity phase. XTE J1810-197 is one of theExpand
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The anatomy of a magnetar: XMM monitoring of the transient anomalous X-ray pulsar XTE J1810–197
Abstract We present the latest results from a multi-epoch timing and spectral study of the Transient Anomalous X-ray Pulsar XTE J1810–197. We have acquired seven observations of this pulsar with theExpand
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The puzzling X-ray source in RCW103
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We present the discovery of the first X-ray counterpart to a Rotating RAdio Transient (RRAT) source. RRAT J1819-1458 is a relatively highly magnetized (B ~ 5 × 1013 G) member of a new class ofExpand
The variable spin-down rate of the transient magnetar XTE J1810−197
We have analyzed XMM-Newton and Chandra observations of the transient magnetar XTE J1810-197, spanning more than 11 years, from the initial phases of the 2003 outburst to the current quiescent level.Expand


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Soft γ-ray repeaters (SGRs) emit multiple, brief (∼0.1-s), intense outbursts of low-energy γ-rays. They are extremely rare—three are known in our Galaxy and one in the Large Magellanic Cloud. TwoExpand
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