TYPE I X-RAY BURSTS FROM THE NEUTRON-STAR TRANSIENT XTE J1701–462
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Lin-2009-TYPE I X-RAY BURSTS.pdf
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Author(s)
Lin, Dacheng
Altamirano, Diego
Homan, Jeroen
Wijnands, Rudy
Belloni, Tomaso M.
Remillard, Ronald A
Date Issued
June 2009
Journal
Astrophysical Journal
Publisher
IOP Publishing
Citation
Lin, Dacheng, Diego Altamirano, Jeroen Homan, Ronald A. Remillard, Rudy Wijnands, and Tomaso Belloni. “TYPE I X-RAY BURSTS FROM THE NEUTRON-STAR TRANSIENT XTE J1701–462.” The Astrophysical Journal 699, no. 1 (June 10, 2009): 60–65. © 2009 The American Astronomical Society.
Version
Final published version
Abstract
The neutron-star X-ray transient XTE J1701−462 was observed for ~3 Ms with RXTE during its 2006–2007 outburst. Here we report on the discovery of three type-I X-ray bursts from XTE J1701−462. They occurred as the source was in transition from the typical Z-source behavior to the typical atoll-source behavior, at ~10% of the Eddington luminosity. The first burst was detected in the Z-source flaring branch (FB); the second in the vertex between the FB and normal branches; and the third in the atoll-source soft state. The detection of the burst in the FB cast doubts on earlier speculations that the FB is due to unstable nuclear burning of accreted matter. The last two of the three bursts show photospheric radius expansion, from which we estimate the distance to the source to be 8.8 kpc with a 15% uncertainty. No significant burst oscillations in the range 30–4000 Hz were found during these three bursts.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.1088/0004-637x/699/1/60
