1. A puzzule of the 6.40-6.42 keV lines
and Hard X-rays in RCW 86 (and the GC)
Fluorescence by t hard X-rays
by high energy electrons　
Or Thermal origin ?

2. Red: keV
Green: 1-2 keV
Blue: 2-8 keV

3. What is the origin of 6.4 keV lines ?
Left: XMM-Newton EPIC (MOS/PN) mosaic of RCW 86, with a color coding similar to Fig. 1, using a square root brightness scaling. Spectral extraction regions are overlaid.
Right: Archival Molonglo Observatory Synthesis Telescope (MOST) 0.84 GHz radio map (Whiteoak & Green 1996; Dickel et al. 2001).

4. Red: 0.5－1.0
Blue:
Green: 6.4 keV
Γ= 3.7, E= keV

5. RCW86 SW
Contour: Soft Band, Left: Hard Band Image
Right: Fe line (6.4 keV) Image:

7. Left: XMM-Newton EPIC (MOS/PN) mosaic of RCW 86, with a color coding similar to Fig. 1, using a square root brightness scaling. Spectral extraction regions are overlaid.
Right: Archival Molonglo Observatory Synthesis Telescope (MOST) 0.84 GHz radio map (Whiteoak & Green 1996; Dickel et al. 2001).

9. RCW 86 (Suzaku)
Grey scale: Fe-K,
Contour:
keV: 3-6 keV

10. Northeast Region North Region-1 -2 -3 -4
keV