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超新星遗迹作为宇宙线起源的观测研究

超新星遗迹作为宇宙线起源的观测研究. 杨 戟， 逯登荣 （中国科学院 紫金山天文台） 张吉龙 , 谭有恒 ( 中国科学院 高能物理研究所）. SNR 与致密星际分子云相互作用 : IC 443 (DeNoyer 1979; Huang et al. 1986). CO Gas around SNR RX J1713.7-3946 (G347.4-0.5) M(CO, cloud A+B) = 6  10 5 M  (Butt et al. 2001). TeV confidence levels. EGRET 3EG J1714-3857.

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超新星遗迹作为宇宙线起源的观测研究

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  1. 超新星遗迹作为宇宙线起源的观测研究 杨 戟， 逯登荣 （中国科学院 紫金山天文台） 张吉龙, 谭有恒 (中国科学院 高能物理研究所）

  2. SNR与致密星际分子云相互作用: IC 443(DeNoyer 1979; Huang et al. 1986)

  3. CO Gas around SNR RX J1713.7-3946 (G347.4-0.5)M(CO, cloud A+B) = 6105 M(Butt et al. 2001) TeV confidence levels EGRET 3EG J1714-3857 ROSAT PSPC X-ray

  4. SNR致密气体分布的观测: ~ 20 IC 443 (Denoyer 1979;White et al. 1987), • W 51C (Koo & Moon 1997), • W44 (Seta et al. 1998), • 3C 391 (Reach & Rho 1999) • W 28(Arikawa et al. 1999), • G18.1+3.0 (Dubner et al. 1999), • HB 21(G89.0+4.7; Koo et al. 2001), • G349.7+0.2 (Reynoso et al. 2001), • RX J1713.7-3946 (Butt et al. 2001), • G359.1-0.5 (Lazendic et al. 2002), • G 347.3-0.5 (Fukui et al. 2003).

  5. G40.5-0.5 @ 2.7 GHz(Downes et al. 1980) • Size=24 28  @P.A.=157 ° (HPBW = 4.4 ) • Flux=7.2±0.5 Jy @2.7GHz • Spectral Index = 0.41 ±0.05 • Distance= 5.5-8.5 kpc (6.1 kpc by Case et al. 1998) • Linear Diameter = 40-65 pc • Age = (2-4)104 yr

  6. GeV J1907+0557(3EG J1903+0550) • ASCA GIS Image for 2-10 keV : • F2-10keV= (0.76±0.17) 10-12 ergs cm-2 s-1 • EGRET Flux • F(>1 GeV)>= (7.0 ± 1.8)10-8 ph cm-2 s-1 (Roberts et al. 2001) ASCA GIS image (2-10 keV) EGRET GeV confidence levels 68%, 95%, 99%

  7. 周围致密气体的毫米波射电观测 • Telescope 13.7m @ 青海，德令哈 • Altitude 3200m • Line CO (J=1-0) • Frequency 115.271 GHz • Spectral Resolution 209 kHz (0.5 km s-1) • Mode Raster Scan • Grid Size 2 2  • Rms Noise Level 0.3 K • Mapping Area [ L=40 ° ~ 41.5 °; B= -0.5 ° ~-1.5 ° ] • Total Points = 1461 13.7米 毫米波射电望远镜

  8. 星际分子谱线观测结果 • 气体的速度范围：VLSR=0-90 km s-1 • 由多成份所构成

  9. 气体分布 • Contour Map • 总质量 2.6106 M (assumed D=5.5 kpc)

  10. Shocked 发射 • P-V Map of the Shocked Molecular Gas • Integrated Intensity Map of Shocked Emission

  11. 速度分布：E-W方向

  12. 速度分布：N-S方向

  13. 区域扩大图 A B

  14. 激波气体谱线轮廓: shocked gas DV =15~ 20 km s-1

  15. 源的运动学距离: 3.5 kpc

  16. 分子气体基本观测物理量 • Size of Shocked Area: 30’ (=31 pc @3.5kpc) • Gas Velocity: 15-20 km s-1 • Shocked Mass: (2-4)105 M • Momentum: (3-80)106 Mkms-1 • Energy: (0.5-1.6) 1051 ergs

  17. Implication of SNR Interaction • 爆发能量 • FSNR (> 1 GeV) • Fcloud (> 1 GeV) • Origin of GeV Flux • 问题： 需要与TeV Flux相比较

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