射电喷流与中央能源

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射电喷流与中央能源. 蒋栋荣 上海天文台. 一 . 喷流的观测研究. 河外射电源的喷流是射电天文的主要研究目标之一 喷流的成分,物理参数,速度和定向,辐射机制; 喷流与中央能源:黑洞和吸积盘的关系 产生机制和准直机制,寿命,对称性; 喷流的传递以及与周围介质的相互作用及其对星系演化的影响等。. 射电强与射电宁静 AGN. 活动星系核有着很多的分类 , 大多是根据观测特征进行分类的 , 其物理的起源也是不完全理解的 . 其中最重要的一种分类是射电强和射电宁静 . 这种分类 - PowerPoint PPT Presentation

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  • 3C449VLA 1.4GHz

  • FRII P(178MHz) > 5x1025 w/Hz 1 (edge-brightened ) FRI FRI10% knots Cyg A VLA 4885MHz map

  • Cyg A

    lobecorehotspotsjetVLA imageVLBI image22 GHz

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  • NGC326X7%AT+HST

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    3C75S3C75N

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  • 1.3 pc

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    (H0, q0)

  • 3C279 (z = 0.536)

  • Kellermann et al,2003

  • EGRETVLBIJostad etal. (2001,ApJS,134,18142Gamma Blarza 1993-199733VLBIGammaGamma

    EGRETbeamed

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  • NGC4258 H2O maser VLBI ~ 3.5x107 M

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    PKS 0521365

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  • (Xu etal 1999, AJ, 118, 1169 )

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  • (Celotti et al.,MNRAS,1997,286,415): ,.

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  • Hirotani 2004

    Lorentz Lorentz

  • a)Rawlings&Saunders(Nature,1991,349,138)39z
  • (Willott et al. ,MNRAS,19993091017) (a)

  • Punsly (astroph0503267)LobeX

    Willott2

  • b)Celotti et al. 1993,MNRAS264228

  • X

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  • X

    X

  • FBQS Lacy et al. 2001ApJ,551L17

  • L/LEdd~0.1

  • Ho, 2001,ApJ,564,120

  • Snellen et al, 2003,MNRAS342889

  • (SDSS)(McLure&Javis,2004,)

  • KendallR

  • Wang et al.,2004,ApJ,615,L9Celotti et al 199735Blazars disk

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  • Junor et al. Nature,1999,401,891

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  • (Livio et al., ApJ, 1999, 512,100)Rh h, (poloidal)BphBZ()

  • Rd (, ~Rh) Rdh, (poloidal)Bpd

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  • Cao ,2002,MNRAS,332,999disk Ljet/Lacc

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  • .