SHAO Astrophysics Colloquia
Title: Galaxy formation and spatial alignment
Speaker: Dr Xi Kang (Purple Mountain Observatory, CAS))
Time: 3 PM, Apr. 27th (Thursday)
Galaxies are the fundamental units and building blocks of the Universe. Vast progress has been made in both observational and theoretical studies. In this talk I will introduce two basic tools, semi-analytical model and hydro-dynamical simulations, for modeling galaxy formation. I will highlight their progress, challenges and future prospects. In the mean time, galaxy spatial alignment contains rich information of how galaxies are accretion and shaped by the large-scale environment, I will also shortly introduce our recent work on understanding the correlation between galaxy spin and the large-scale structure.
Speaker: Maryam Samadi (Ferdowsi university of Mashhad)
Title: How does a magnetic field change the vertical structure of a hot accretion flow?
Time: 10:00 am, Apr. 28th
There are some considerable evidences of the existence of asymmetric jets in extragalactic radio sources such as Cygnus X-3, M87 and M81. To explain these asymmetrical matter ejections, some scientists believe there is an intrinsically reason. In our recent paper, we have investigated one probable reason for emerging these asymmetric outflows which is based on the special configuration of magnetic field. In my talk, I will briefly speak about 1) popular models of black hole accretion disks, 2)magnetic field's roles in accretion disks. At the end, I will present my results with considering symmetric and asymmetric magnetic field in hot accretion disks.
Black hole Accretion and High-energy Astrophysics /Black Hole Feedback and Cosmic Ray Astrophysics Seminar
Time: 14:00-16:00, Wednesday(April 26th)
Speaker: Fuguo Xie
Title: The fast-rise-exponential-decay lightcurve in LLAGN NGC 7213
Speaker: Xiaodong Duan
Title: Mass transport by buoyant bubbles in galaxy clusters
Name: Prof. Paul Wiita
Affiliation: The College of New Jersey, USA
Host: Prof. Minfeng Gu