231 citations · 771 across the 16 of their papers we have counts for
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X-ray Bursts from the Transient Magnetar Candidate XTE J1810-197
P. M. Woods, C. Kouveliotou, F. P. Gavriil +6
We have discovered four X-ray bursts, recorded with the Rossi X-ray Timing Explorer Proportional Counter Array between 2003 September and 2004 April, that we show to originate from…
The Pulsed Spectra of Two Extraordinary Pulsars
Mallory S. E. Roberts, Scott M. Ransom, Fotis Gavriil +5
We report on X-ray monitoring of two isolated pulsars within the same RXTE field of view. PSR J1811-1925 in the young supernova remnant G11.2-0.3 has a nearly sinusoidal pulse prof…
Discovery of a New Transient Magnetar Candidate: XTE J1810-197
A. I. Ibrahim, C. Markwardt, J. Swank +10
We report the discovery of a new X-ray pulsar, XTE J1810-197. The source was serendipitously discovered on 2003 July 15 by the Rossi X-ray Timing Explorer (RXTE) while observing th…
New Evidence for Proton Cyclotron Resonance in a Magnetar Strength Field from SGR 1806-20
Alaa I. Ibrahim, Jean H. Swank, William Parke
A great deal of evidence has recently been gathered in favor of the picture that Soft Gamma Repeaters and Anomalous X-Ray Pulsars are powered by ultra-strong magnetic fields (B > 1…
Discovery of Cyclotron Resonance Features in the Soft Gamma Repeater SGR 1806-20
Alaa I. Ibrahim, Samar Safi-Harb, Jean H. Swank +3
We report evidence of cyclotron resonance features from the Soft Gamma Repeater SGR 1806-20 in outburst, detected with the Rossi X-ray Timing Explorer in the spectrum of a long, co…
An Unusual Burst from Soft Gamma Repeater SGR 1900+14: Comparisons with Giant Flares and Implications for the Magnetar Model
Alaa I. Ibrahim, Tod E. Strohmayer, Peter M. Woods +6
The Soft Gamma Repeater SGR 1900+14 entered a remarkable phase of activity during the summer of 1998. This activity peaked on August 27, 1998 when a giant periodic gamma-ray flare…