X-Ray Observations of SN1006 Koyama, K. Kyoto University Palmieri et al (1972) Ballon : The first X-ray detection Winkler and Laird : OSO7 The spectrum Photon index =2.3 or kT = 4 keV Becker et al (1980) SSS, OSO8 : Crab Like spectrum : Photon index = 2.2 (no line) Vartanian et al.1985 (GSPC: Balloon) Detection of OVII line = Thermal Plasma (0,1-0.2 keV) Koyama et al (GSPC: Tenma) : Steeper Power law Photon index- 3.3 NEI Plasma kT 1.9 keV Morphology Chandra: Very Thin Filaments Spectroscopy Suzaku Thermal vs Non-Thermal
Chandra: Thin Filaments (Bamba et al.) In this region, electron returns back (small: quick, large: slow) The thin filaments = diffusion to the shock normal is small The Efficiency of Particle Acceleration NR: High ER: Low A ping-pong ball gets speed (energy) by a rally in a moving wall shock
B (perpendicular) down stream becomes very turbulent, hence be strongly scattered. B=100 – 400 G (Berezhko et al. 2004) B (pararell) Strong B makes the gyro radius small → diffusion becomes small Efficient particle accelerations Thermal plasma shock E= TeV. B=10 – 20 G up down
E Suzaku: Launch:2005/7/10 XIS Suzaku XIS-FI Suzaku XIS-BI O VII O VIII Ne IX Ne X BI: Good Response at low energy FI: Low and Stable BG at high energy Galactic Center
Black : XIS-BI Red : average of 3 XIS-FIs He-O H-O Non-thermal emission keV band 3-5 keVOVII band See also Poster E
North rim East rim Inner We divide the NE rim region into 64 segments. Made each spectra Fit with a Power-law + thin plasma model Then.
Assuming CIE Plasma kT = constant He-O line is prportinal to the thin thermal flux. North rim East rim Inner region Large Thermal Flux Steep Non Thermal North rim East rim Inner
Results of the CIE Case (1) Stronger OVII Flux (Thermal flux) Region has a steeper gamma (Non Thermal) (2) 3 regions (NR, ER, Inner) are separated by the Hard X-ray Flux vs OVII flux map Chandra Image North Rim East Rim This is CIE case However the plasma in a young SNR Is likely NIE. We then try NIE plasma
Hard to distinguish CIE vs NEI Two Local Minima at large nt and small nt
Gamma-map kT-map nt-map NEI Results Support Smaller Larger Lower Larger Higher Smaller
Conclusion North Rim Low density High temp and Highly NEI better injector to the accelerator. Flat Γ, Sharp W u Acceleration efficiency is high Total thermal energy of plasma becomes small East Rim High density Low temp and Moderate NEI Steep Γ, Slow W u Acceleration efficiency is low Total thermal energy of plasma remains large Chandra Image North Rim East Rim
Japanese historical record of SN1006 “Meigetsuki” (This page was written in 8 th September, in 1230.) 「客星古現例」 the ancient samples of “guest stars”. Guest stars = comets, novae, or supernovae SN1006
ToJi Temple Teika Suzaku-Mon Gate Palace SaiJi Temple Suzaku Av. Rajyo-Mon Gate
Southern Sky from Kyoto in AD1006/05/01 Mars Antares SN1006 Sai-Ji To- Ji
ToJi Temple Tomb of Teika Koyama House of Teika
朱雀 Suzaku The wall painting of “Suzaku” i n the ancient tomb “Kitora” built in the Asuka Era Since the dead line of paper submission is approaching, please visit here conference/suzaku2006/conference/suzaku2006/registration/registration.cgi and go into proper action
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