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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center
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Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center

机译：朱雀从银河中心探测到扩展/漫射硬X射线发射

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Fiveon-planeregionswithin$$pm$$0.8DofthegalacticcenterwereobservedwiththeHardX-rayDetector(HXD)andtheX-rayImagingSpectrometer(XIS)aboardSuzaku.Fromallregions,significanthardX-rayemissionwasdetectedwithHXD-PINupto40keV,inadditiontotheextendedplasmaemissionwhichisdominantintheXISband.ThehardX-raysignalsareinferredtocomeprimarilyfromaspatiallyextendedsource,ratherthanfromasmallnumberofbrightdiscreteobjects.ContributionstotheHXDdatafromcataloguedX-raysources,typicallybrighterthan1mCrab,wereestimatedandremovedusinginformationfromSuzakuandothersatellites.Evenafterthisremoval,thehardX-raysignalsremainedsignificant,exhibitingatypical12-40keVsurfacebrightnessof4$$ imes$$10$$^{-10}$$ergcm$$^{-2}$$s$$^{-1}$$deg$$^{-2}$$andpower-law-likespectrawithaphotonindexof1.8.CombinedfittingstotheXISandHXD-PINspectraconfirmthataseparatehardtailcomponentissuperposedontothehotthermalemission,confirmingapreviousreportbasedontheXISdata.Overthe5-40keVband,thehardtailisspectrallyapproximatedbyapowerlawofphotonindex$$sim$$2,butbetterbythosewithsomewhatconvexshapes.PossibleoriginsoftheextendedhardX-rayemissionarediscussed.
机译：Fiveon-planeregionswithin $$ PM $$ 0.8DofthegalacticcenterwereobservedwiththeHardX-rayDetector（HXD）andtheX-rayImagingSpectrometer（XIS）aboardSuzaku.Fromallregions，significanthardX-rayemissionwasdetectedwithHXD-PINupto40keV，inadditiontotheextendedplasmaemissionwhichisdominantintheXISband.ThehardX-raysignalsareinferredtocomeprimarilyfromaspatiallyextendedsource，ratherthanfromasmallnumberofbrightdiscreteobjects.ContributionstotheHXDdatafromcataloguedX-raysources，typicallybrighterthan1mCrab，wereestimatedandremovedusinginformationfromSuzakuandothersatellites.Evenafterthisremoval，thehardX- Raysignals仍然很重要，表现出非典型的12-40keV 4 $$ imes $$ 10 $$ ^ {-10} $$ ergcm $$ ^ {-2} $$ s $$ ^ {-1} $ deg $$ ^ {-2} $$ andpower类似于法律的光谱，光子指数为1.8。结合XIS和HXD-PIN光谱，可以确定在热热发射上叠加了一定的硬尾分量，并根据XIS数据确定了先前的报告。在5-40keV频带上，硬尾近似地由光子幂律近似x $$ sim $$ 2，但是最好用那些具有某些凸形的形状。讨论可能的起源软扩展的硬X射线发射。

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