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세이퍼트 은하 IC 5063에서 고속 분자 방출에 의한 제트류 가속화

Jet acceleration of the fast molecular outflows in the Seyfert galaxy IC 5063
  • 작성자 : KASI
  • 작성일 : 2014-08-01
  • 조회수 : 3458
  • 저자C. Tadhunter, R. Morganti, M. Rose, J. B. R. Oonk & T. Oosterloo
  • Absract

     

    Massive outflows driven by active galactic nuclei arewidely recognized to have a key role in the evolution of galaxies, by heating the ambient gas, expelling it from the nuclear regions, and thereby affecting the star-formation histories of the galaxy bulges. It has been proposed that the powerful jets of relativistic particles (such as electrons) launched by someactive nuclei can both accelerate andheat themolecular gas, which oftendominates themass budgets of the outflows. Clear evidence for hismechanism, in the form of detailed associations between the molecular gas kinematics and features in the radio-emitting jets, has however been lacking. Here we report that the warm molecular hydrogen gas in the western radio lobe of the Seyfert galaxy IC 5063 is moving at high velocities- up to about 600 kilometres per second- relative to the galaxy disk. This suggests that themolecules have been accelerated by fast shocks driven into the interstellar medium by the expanding radio jets.These results demonstrate the general feasibility of accelerating molecular outflows infast shocksdrivenby activenuclei.

     


  • 게재정보Nature(2014. 07. 24.)에 실린 연구논문을 게시함
  • 첨부파일
  • 원 문http://www.nature.com/nature/journal/v511/n7510/full/nature13520.html
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