1. Suzaku The Suzaku Results of the Galactic Center X-rays Nickname
- Collisinal Excitation or Charge Exchange ? -
Katusji Koyama, Kyoto University
ASTROE2
Launch:
2005/7/10
Nickname
Suzaku
An Ancient
Oriental
mythology

2. ３ Main Instrumnets on Suzaku： HXD, XRS, XIS

3. World (Universe) Records. But !
The XRS
Spectrum
on Orbit
60 mK, 7.0 keV:　
World (Universe) Records. But　!
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　

4. 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

5. Collisional Excitation or Charge Exchange ?
Si12+Kα
Si12+Kβ 6 7 8
Fe24+Kα
Fe25+Kα
Fe24+Kβ
FeKα
Ni26+Kα
FeKβ
Fe25+Kβ
Ni27+Kα
Ni Kα
Ar16+Kβ
Ar16+Kα
Si13+Kα
Ca18+Kα
Ca19+Kα
Ar17+Kα
S14+Kα
S15+Kα
S14+Kβ
6.4 keV
Is the 6.7 keV line
Collisional Excitation or
Charge Exchange ?
6.7 keV
2.46 keV

7. Name Observed Lab ⊿ (eV) -----------------------------
S Lya
FeLya
Mn Ka
He-like Fe Ka = 6679 eV
　Close to 6685eV(d =6eV)
Width (s) = 38 eV
　　 (Triplet, not Velocity)
Collisional Excitation
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. Ec= 6679 eV +/- 1 eV ( systematic error~ +- 5 eV):
The　G-ratio decreases as decreasing plasma temperature.　
It also decreases with temperature due to the contribution
of satellite line. Thus we can constrain the plasma
temperature kT using the center energy. The results are:
kT = 3.2 keV keV　（Vapec)
kT = 7.5 keV +∞ -3 keV　（VMEKAL)
This is just the XRS science, hence our GC study make more clear strategy for the NeXT, the corner stone project in Japan.

9. Ionization Temperature Fe Ka H-like/He-like: kTi=6.5 keV +/- 0.1ke V
Fe Kb H-like/He-like: kTi=5.1 keV keV
Ni Ka H-like/He-like : kTi= 9.3 keV keV
Electron Temperature
He-like Fe Kb/Ka : kTe=6.2 keV +3 -1keV
H-like Fe Kb/Ka : kTe> 6.5 keV (lower limiｔ)
All the results are consitent if the Plasma is kTi ~ kTe=6.5 keV.
This methodology to determine the electron temperature (kTe)
at the Fe energy is possible only with Suzaku. Our new method constrains the Continuum shape, hence can separate the
Non-thermal components.

10. 明月記 客星出現例 一條院寛弘三年四月二日 葵酉 夜以降騎官中有大客星 朱雀 飛鳥時代のキトラ 古墳の壁画 Meigetsuki
明月記 客星出現例
一條院寛弘三年四月二日
葵酉 夜以降騎官中有大客星 朱雀
飛鳥時代のキトラ
古墳の壁画
Suzaku
The wall painting
of “Suzaku” in
the ancient tomb
“Kitora” built in
the Asuka Era
Meigetsuki
:Records of
guest stars
In the 1-st May 1006,
a large guest star
appeared within
the Kikan (Lupus)
Constellation

11. He-Like Fe Kb
He-Like Ni Ka
H-Like Ni Ka/