论文标题
第一个银河ULX Pulsar Swift J0243.6+6124的Astrosat观测
AstroSat Observations of the first Galactic ULX Pulsar Swift J0243.6+6124
论文作者
论文摘要
SwiftJ0243.6+6124，这是第一个银河超光X射线脉冲星，在其2017-2018爆发期间，在\ emph {astrosat}爆发时，在\ emph {astrosat} sub- eDdington和super-eDdington水平均与X射线的X射线含量均与$ l_ {x} $ l_ {x {x {\ sim} {\ sim} {\ sim} {\ sim} 7 {\ sim} {\ sim} {\ sim} {\ sim} {\ sim} {\ sim} 7 {} 7 {{{7 {}}的$ 6 {\ times} 10^{38} $$ ergs^{ - 1} $，分别分别。我们的宽带正时和光谱观察表明，X射线脉动在$ {\ sim} 9.85 \ rm} $ {\ sim} $ {\ rm {s} $中都在源源高达150kev时，源于超级级别的范围，并符合超级级别的功能。亮度，显示一个双峰配置文件，脉冲分数从$ \ sim $$ 10 {\％} $以$ 1.65 \ rm {kev} $到40--80 $ \％$ \％$ \％$ \％$ \％$ \％\ rm {kev} $。法律（$γ$$ {\ sim} $ 0.6-0.7）和一个或两个黑体组件，温度为$ \ sim $ \ sim $ 0.35 $ \ rm \ rm {kev} $和$ 1.2 \ rm {kev} $，取决于收益级别。超级 - 埃德丁顿级别，以及黑体半径（$ 121-142 \ rm {km} $），表明存在光学较厚的流出。
SwiftJ0243.6+6124, the first Galactic ultra-luminous X-ray pulsar, was observed during its 2017-2018 outburst with \emph{AstroSat} at both sub- and super-Eddington levels of accretionwith X-ray luminosities of $L_{X}{\sim}7{\times}10^{37}$ and $6{\times}10^{38}$$ergs^{-1}$, respectively.Our broadband timing and spectral observations show that X-ray pulsations at ${\sim}9.85\rm{s}$ have been detected up to 150keV when the source was accreting at the super-Eddington level.The pulse profiles are a strong function of both energy and source luminosity,showing a double-peaked profile with pulse fraction increasing from $\sim$$10{\%}$ at $1.65\rm{keV}$ to 40--80$\%$ at $70\rm{keV}$.The continuum X-ray spectra are well-modeled with a high energy cut-off power law($Γ$${\sim}$0.6-0.7) and one or two blackbody components with temperatures of $\sim$0.35$\rm{keV}$ and $1.2\rm{keV}$, depending on the accretion level.No iron line emission is observed at sub-Eddington level, while a broad emission feature at around 6.9keV is observed at the super-Eddington level, along with a blackbody radius($121-142\rm{km}$) that indicates the presence of optically thick outflows.
