Discovery of a transient magnetar: XTE J1810-197

@article{Ibrahim2003DiscoveryOA,
  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},
  year={2003},
  volume={609}
}
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
We report on X-ray observations of the 5.54 s transient magnetar XTE J1810-197 using the XMM-Newton and Chandra observatories, analyzing new data from 2008 through 2014, and re-analyzing data fromExpand
Radio disappearance of the magnetar XTE J1810-197 and continued X-ray timing
We report on timing, flux density, and polarimetric observations of the transient magnetar and 5.54 s radio pulsar XTE J1810-197 using the GBT, Nancay, and Parkes radio telescopes beginning in earlyExpand
The 11 yr of low activity of the magnetar XTE J1810−197
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
From outburst to quiescence: the decay of the transient AXP XTE J1810-197
Aims. XTE J1810-197 is the first transient anomalous X-ray pulsar ever discovered. Its highly variable X-ray flux allowed us to study the timing and spectral emission properties of a magnetarExpand
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
The Variable Radio-to-X-Ray Spectrum of the Magnetar XTE J1810–197
We have observed the 5.54 s anomalous X-ray pulsar XTE J1810-197 at radio, millimeter, and infrared (IR) wavelengths, with the aim of learning about its broadband spectrum. At the IRAM 30 mExpand
The Fading of Transient Anomalous X-Ray Pulsar XTE J1810-197
Three observations of the 5.54 s transient anomalous X-ray pulsar XTE J1810-197 obtained over 6 months with the Newton X-ray Multi-Mirror (XMM-Newton) mission are used to study its spectrum andExpand
The puzzling X-ray source in RCW103
Abstract 1E 161348-5055 (1E) is a compact object lying at the center of the 2000 year old Supernova Remnant (SNR) RCW103. Its original identification as an isolated, radio-quiet neutron star has beenExpand
Discovery of the X-Ray Counterpart to the Rotating Radio Transient J1819-1458
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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