论文标题
LMXB XTE J1710-281与Suzaku的宽带光谱分析
Broad-band spectral analysis of LMXB XTE J1710-281 with Suzaku
论文作者
论文摘要
这项工作通过使用Suzaku档案数据介绍了中子恒星低质量X射线二元，XTE J1710-281的宽带时间平均光谱分析。在此观察过程中，该来源处于硬谱状态或中间光谱状态。这是第一次对XTE J1710-281的持续发射光谱进行详细的光谱分析，最多可进行30 keV，并在其光谱参数上进行了改进的约束。通过同时拟合XIS（0.6-9.0 KEV）和HXD-PIN（15.0-30.0 KEV）数据，我们使用了源模型的持续频谱对源模型进行了建模，该模型包含来自积聚盘和/或中子星形/边界/边界层和硬组件的软件。具有中性吸收剂的0.6-30 KEV连续体可以通过多色圆盘黑体来描述，内部圆盘温度为$ kt _ {\ rm disc} = 0.28 $ keV，这是由热电子云与电子温度$ kt _ {\ rm e}} $ 5 $ kev的热电子云显着构成的，并以$ kt $ kev的形式描述。一个更复杂的三组分模型，包括一个多色圆盘黑体$ \ 0.30 $ keV，单个温度黑体$ \ $ \约0.65 $ kev和圆盘中的comptonization，由一个电离吸收剂（log（$之一）$ 4）的杂物（约38％）吸收（约38％）。
This work presents the broad-band time-averaged spectral analysis of neutron star low-mass X-ray binary, XTE J1710-281 by using the Suzaku archival data. The source was in a hard or an intermediate spectral state during this observation. This is the first time that a detailed spectral analysis of the persistent emission spectra of XTE J1710-281 has been done up to 30 keV with improved constraints on its spectral parameters. By simultaneously fitting the XIS (0.6-9.0 keV) and the HXD-PIN (15.0-30.0 keV) data, we have modelled the persistent spectrum of the source with models comprising a soft component from accretion disc and/or neutron star surface/boundary layer and a hard Comptonizing component. The 0.6-30 keV continuum with neutral absorber can be described by a multi-colour disc blackbody with an inner disc temperature of $kT_{\rm disc} = 0.28$ keV, which is significantly Comptonized by the hot electron cloud with electron temperature of $kT_{\rm e} \approx 5$ keV and described by photon index $Γ= 1.86$. A more complex three-component model comprising a multi-colour disc blackbody $\approx 0.30$ keV, single temperature blackbody $\approx 0.65$ keV and Comptonization from the disc, partially absorbed (about 38 per cent) by an ionized absorber (log($ξ$) $\approx$ 4) describes the broad-band spectrum equally well.
