A puzzule of the keV lines

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Presentation transcript:

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 ?

Red: 0.5-1 keV Green: 1-2 keV Blue: 2-8 keV

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).

Red: 0.5－1.0 Blue: 3.0-6.0 Green: 6.4 keV Γ= 3.7, E=6.400-6.407 keV

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

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).

RCW 86 (Suzaku) Grey scale: Fe-K, Contour: 0.5-1.0 keV: 3-6 keV

Northeast Region North Region -1 -2 -3 -4 6.42+-0.1 keV