Spatial Distribution of the Galactic Center Diffuse X-Rays and the Spectra of the Brightest 6.4 keV Clumps

Koyama Katsuji; Takikawa Yojiro; Hyodo Yoshiaki; Inui Tatsuya; Nobukawa Masayoshi; Matsumoto Hironori; Tsuru Takeshi Go

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Spatial Distribution of the Galactic Center Diffuse X-Rays and the Spectra of the Brightest 6.4 keV Clumps

机译：银河系中心扩散X射线的空间分布和最亮的6.4 keV团块的光谱

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Thehighenergyresolutionandlowbackground,particularlyinthehardX-rayband,oftheX-rayImagingSpectrometeronboardSuzakuprovideexcellentspectraoftheGalacticcenterdiffuseX-rays(GCDX).ThispaperreportsontheresultsofspatiallyresolvedspectroscopyoftheGCDX.ThemostpronouncedfeaturesoftheGCDXaretheK-shelltransitionlinesfromneutral(Fei)andHe-like(Fexxv)ironsatenergiesof6.4keVand6.7keV,respectively.Thefluxesoftheselinesarenon-uniformlyandasymmetricallydistributedwithrespecttoSgrA$$^ast$$.The6.4keVlinesareparticularlybrightonthepositivesideoftheGalacticlongitude(east-side)withclumpystructures.AbrightclumpneartheGCexhibitsatimevariabilityoveratimescaleofafewyears.Neitherthe6.4keVnor6.7keVlinefluxshowscloseproportionalitytothecontinuumflux(5a€“10keVband);the6.4keVlineshowsexcessonthehighfluxside,andviceversaforthe6.7keVline.Ontheotherhand,thesumofthe6.4keVplus6.7keVlinefluxeswitharatioof1:2showsgoodproportionalitytothecontinuumflux,andhencewephenomenologicallydecomposedthecontinuumfluxoftheGCDXintothe6.4keV-and6.7keV-associatedcontinuumswithafluxratioof1:2.Basedonthesefacts,wehavetriedtoestimatethecontributionofdiffuseandintegratedfluxofpointsourcestotheGCDX.

机译：Thehighenergyresolutionandlowbackground，particularlyinthehardX-rayband，oftheX-rayImagingSpectrometeronboardSuzakuprovideexcellentspectraoftheGalacticcenterdiffuseX射线（GCDX）.ThispaperreportsontheresultsofspatiallyresolvedspectroscopyoftheGCDX.ThemostpronouncedfeaturesoftheGCDXaretheK-shelltransitionlinesfromneutral（费）andHe样（Fexxv）ironsatenergiesof6.4keVand6.7keV，respectively.Thefluxesoftheselinesarenon-uniformlyandasymmetricallydistributedwithrespecttoSgrA $$ ^ AST $$。The6.4keVlinesareparticularlybrightonthepositivesideoftheGalacticlongitude （东侧）withclumpystructures.AbrightclumpneartheGCexhibitsatimevariabilityoveratimescaleofafewyears.Neitherthe6.4keVnor6.7keVlinefluxshowscloseproportionalitytothecontinuumflux（5α€“10keVband）; the6.4keVlineshowsexcessonthehighfluxside，andviceversaforthe6.7keVline.Ontheotherhand，thesumofthe6.4keVplus6.7keVlinefluxeswitharatioof1：2showsgoodproportionalitytothecontinuumflux，andhencewephenomenologicallydecomposedthecontinuumfluxoftheGCDXintothe6.4k eV和6.7keV关联的连续体具有1：2的流量比率。基于这些事实，我们试图估算点扩散对GCDX的贡献和综合贡献。

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《PASJ: Publications of the Astronomical Society of Japan》 |2009年第sp1期|共页
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Koyama Katsuji; Takikawa Yojiro; Hyodo Yoshiaki; Inui Tatsuya; Nobukawa Masayoshi; Matsumoto Hironori; Tsuru Takeshi Go;
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5. Observations of the diffuse soft X-ray background from 0.07 to 1.0 keV [D] . Bloch, Jeffrey Joseph 1988

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7. Spatial Distribution of the Galactic Center Diffuse X-Rays and the Spectra of the Brightest 6.4 keV Clumps [O] . Katsuji Koyama, Yojiro Takikawa, Yoshiaki Hyodo, 2009

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Spatial Distribution of the Galactic Center Diffuse X-Rays and the Spectra of the Brightest 6.4 keV Clumps

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