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  • Fast Inflows Directly Feeding Quasar Accretion Disks

    Seminar Title  

    Fast Inflows Directly Feeding Quasar Accretion Disks


    Dr. ZHOU Hongyan





    Thursday afternoon, Oct. 31, 15:00 p.m.



    Hall 212, Astronomy Building

                             Welcome to Attend   

      ( PMO Academic Committee & Academic Circulating committee)


    Abstract: Being the most luminous steady beacons in the universe, quasars are believed to be powered by the accretion of gas into disks surrounding supermassive black holes. Despite the success of this standard scenario put forward half a century ago, fundamental questions remain unanswered: whether and how the black hole accretion disks are supplied with external gas? The answers are essential for understanding further questions, as to what sets off, maintains and terminates the quasar activity, and how long the quasar phase lasts for? I will talk about a new tool to probe such disk-feeding mass inflows, the long-sought-after “missing link” of the black hole accretion model.
    Copyright? Purple Mountain Observatory, CAS, No.10 Yuanhua Road, Qixia District, Nanjing 210023, China
    Phone: 0086 25 8333 2000 Fax: 8333 2091 http://english.pmo.cas.cn