1. Galactic Center Diffuse X-rays with Suzaku
Katsuji Koyama, Kyoto University

2. : Collisional Excitation or Charge Exchange : Diffuse or Point Sources
3-Color Image
Red: 6.7 keV
Blue: 6.4 keV
Green: keV
Origin of 6.7/6.9 keV Lines
: Collisional Excitation or Charge Exchange
: Diffuse or Point Sources
(2) Discoveries of New SNR Candidates
(3) Origin of 6.4 keV Line
: X-Ray Reflection or Electron Bremsstrahｌung
: Time Variability of the 6.4 keV clumps.

3. XIS: The Best Performance
as an X-ray CCD
ASCA 320 ksec (Koyama et al. 1996)
Chandra 600ksec (Muno et al.2004)
XMM ksec (Tanaka)
Si XIII Kα
Si XIV Kα
Si XIII Kβ
S XV Kα
S XVI Kα
S XV Kβ
Suzaku:　180 ksec

4. Energy 6 7 8 Fe24+Kα Fe25+Kα Fe24+Kβ Fe Kα Ni26+Kα Fe24+ Kβ Fe25+Kβ
Si12+Kα
Si12+Kβ
Ar16+Kβ
Ar16+Kα
Si13+Kα
Ca18+Kα
Ca19+Kα
Ar17+Kα
S14+Kα
S15+Kα
S14+Kβ
Energy

6. World (Universe) Records. But !
60 mK, 7.0 keV:　
World (Universe) Records. But　!
The XRS
Spectrum
on Orbit
Resonance (r)
6.703keV
1s2p1P1
Forbidden(f)
6.639keV
Δl=0,Δs=1
Fine Structure of Fe24+
1s2 1S0
1s2p3P0,1,2
Δl=1,Δs=0
1s2s 3S1
Name 　　　　　　　Transition　　　 　Energy (eV)
Resonance (r)　 s2s１S0-1s2p 1P1　　
Intercombination line
　　　(x) 　　　　 s2p1S0-1s2p 3P2　　　6682.4
　　　(y)　　　　　　 s2p1S0-1s2p 3P01　　6667.6
Forbidden line (f)　1s2 1S0-1s2s 3S1　

7. Name Observed Lab ⊿ (eV) -----------------------------
S Lya
FeLya
Mn Ka
Electron Capture = 6666eV
Collisional Excitation= 6685 eV f r i r i f l l
6666eV
6685eV
Wargelin, Beiersdorfer
et al. 2005, ApJ, 634,687
FeXXV
FeXXIV
G-ratio = r / (i+f)

8. Iron and Ni line Diagnostics Electron T. Ionization T. Plasma T.