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天の川銀河の中心の星の運動

天の川銀河の中心の星の運動. 海王星くらいの 軌道で (5km/ 秒） 5000km/ 秒以上. 太陽の 400 万倍 も重いブラック ホールがある. 銀河内円盤. 銀河中心のＸ線観測　－その意味と課題ー. 銀河中心. （ 1 ） 6.7 keV LIne: 超高温プラズマ（約１億度 ) の発見. ASCA 320 ksec (Koyama et al. 1996). Suzaku: 180 ksec. S XV Kβ. S XVI Kα. S XV Kα. Si XIII Kβ. Si XIV Kα. Si XIII Kα.

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天の川銀河の中心の星の運動

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  1. 天の川銀河の中心の星の運動 海王星くらいの 軌道で(5km/秒） 5000km/秒以上 太陽の400万倍 も重いブラック ホールがある

  2. 銀河内円盤 銀河中心のＸ線観測　－その意味と課題ー 銀河中心 （1）6.7 keV LIne: 超高温プラズマ（約１億度)の発見

  3. ASCA320 ksec (Koyama et al. 1996) Suzaku:180 ksec S XV Kβ S XVI Kα S XV Kα Si XIII Kβ Si XIV Kα Si XIII Kα Chandra600ksec (Muno et al.2004) XMM 50 ksec (Tanaka) XIS: The BestX-ray CCD

  4. Upper:. The best-fit results with the absorption gas in solar abundance Lower: The best-fit results with the absorption gas in non-solar abundance • The Bets-fit column density are; • NSi = 4.8x1018cm-2 • NS = 9.6x1017 cm-2 • NFe = 8.2x1018 cm-2 • Then; • ZSi = 3.3 solar • ZS = 1.4 solar • ZFe = 2.9 solar • For Si, S: NH = 4.1x1022 cm-2, • For Fe "canonical value“: • NH = 6x1022 cm-2

  5. Fe24+ Kα Fe Kα Fe25+ Kα Ni26+ Kα Fe Kβ Fe24+ Kβ 7 6 8 Table of He-like Iron Triplets ----------------------------------------------------------------------------------------------------- Name Transition Energy (eV) ----------------------------------------------------------------------------------------------------- Resonance (r) 1s2１S0 - 1s2p 1P1 6700.5 Intercombination line (x) 1s2 1S0 - 1s2p 3P2 6682.4 (y) 1s2 1S0 - 1s2p 3P01 6667.6 Forbidden line (f)1s2 1S0 - 1s2s 3S1 6636.7 -----------------------------------------------------------------------------------------------------

  6. Origin of the Iron Lines ? 1s2p1P1 Electron Capture = 6666eV 1s2p3P0,1,2 f Resonance (r) 6.703keV 1s2p3P r Forbidden (f) 6.639keV Δl=1,Δs=0 1s21S0 Δl=0,Δs=1 l Fine Structure of Fe24+ 6666eV 6685eV Collisional Excitation= 6685 eV FeXXIV FeXXV r f l

  7. 6.7keV-Map He-like Fe Ka =6679 eV: Close to 6685eV(d =6eV) H-like Ka line is narrow: Width (s) = 17 eV (~ those of Cal Line) Sgr A* 6.4keV-MaP No intensity enhancement at the 6.4 keV cloud (More H2) 30 pc Collisional Excitation is more Likely

  8. Fe24+ Kα Fe25+ Kα Fe24+ Kβ 7 6 8 Ionization (He-like/H-like Ka) , Electron (Kb/Ka) Temperatures are both ～6 keV (CIE) Temperatures are nearly Constant at l=-0.4～+0.1 deg ,while decrease at the 6.4 keV Cloud Sgr A East

  9. Lyman Series limit

  10. Ionization Temperature He-like Fe Ka/H-like Fe Ka = 5.7~6.6 keV He-like Fe Ka/He-like Ni Ka = 3.5~10 keV (to be revised) Electron Temperature He-like Fe Kb/Ka = 6~10 keV (to be revised)

  11. Centroid of He-like Ka moves with Ionization Temperature due to the satellite lines  From the Observed Centroid, the Ionization temperature is 2.5～6.5 keV(including the systematic error ~5 eV), consistent with He-like Ka/He-like Kb

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