CONSTRAINTS ON THE MASS AND RADIUS OF THE NEUTRON STAR XTE J1807-294

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50855

Title:	CONSTRAINTS ON THE MASS AND RADIUS OF THE NEUTRON STAR XTE J1807-294
Authors:	Leahy,DA;Morsink,SM;Chou,Y
Contributors:	天文研究所
Keywords:	MILLISECOND PULSAR XTE-J1807-294;EQUATION-OF-STATE;X-RAY PULSARS;SAX J1808.4-3658;ORBITAL PARAMETERS;LIGHT CURVES;OUTBURST;SAX-J1808.4-3658;MODEL;SHAPE
Date:	2011
Issue Date:	2012-03-27 18:11:29 (UTC+8)
Publisher:	國立中央大學
Abstract:	The accreting millisecond pulsar XTE J1807-294 is studied through a pulse-shape modeling analysis. The model includes blackbody and Comptonized emission from the one visible hot spot and makes use of the Oblate Schwarzschild approximation for ray-tracing. We include a scattered light contribution, which accounts for flux scattered off an equatorial accretion disk to the observer including time delays in the scattered light. We give limits to mass and radius for XTE J1807-294 and compare these to limits determined for SAX J1808-3658 and XTE J1814-334 previously determined using similar methods. The resulting allowed region for mass-radius curves is small but consistent with a mass-radius relation with nearly constant radius (similar to 12 km) for masses between 1 and 2.5 solar masses.
Relation:	ASTROPHYSICAL JOURNAL
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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