The jet feedback mechanism: from supernovae to clusters of galaxies

主讲人 (Speaker): 
Prof. Noam Soker
主讲人单位 (Speaker's Institute): 
Department of Physics, Technion, Isreal & 广东以色列理工学院
时间 (Time): 
星期五, 2017/05/12 - 14:00 to 15:00
地点 (Location): 
摘要 (Abstract): 

I will review the influence jets and the bubbles they inflate might have on their ambient gas as they operate through a negative jet feedback mechanism (JFM). I will discuss astrophysical systems where jets are observed: cooling flows in galaxies and clusters of galaxies and bipolar planetary nebulae. I will also mention proposals that jets play a crucial role in systems where they are not observed, such as core collapse supernovae, the common envelope evolution, the grazing envelope evolution, and intermediate luminosity optical transients. I will argue that jets are much more common than what is inferred from objects where they are directly observed. Common to all eight types of systems reviewed here is the presence of a compact object inside an extended ambient gas.

主讲人简介 (Speaker's CV): 
Charles Wolfson Academic Chair Research interests: Hot gas in galaxy clusters, Death of massive stars, Intermediate-Luminosity Optical Transients, Eta Carinae 2016 –  Dean of Science, Guangdong Technion Israel Institute of Technology (GTIIT) 2009 – 2015 Dean of the Faculty of Physics, Technion 2005 – 2009 Head of the undergraduate program at the Physics Dept., Technion 1994 – 1998 Chairman of the Mathematics-Physics Department, University of Haifa 1992 - 2003 Oranim - University of Haifa, Science Education Department, Senior Lecturer / Associate Professor / Professor 1989 - 1992 Harvard-Smithsonian Center for Astrophysics, Harvard University, U.S.A., Post-doctoral 1986 - 1989 Department of Astronomy, University of Virginia, U.S.A., Post-doctoral 1986 Ph.D., Department of Physics, Technion