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  每周简讯
 
2015/04/13-2015/04/17

  SHAO Astrophysics Colloquia     

       

Simulating the galaxy population in the context of ΛCDM cosmology   

Speaker: Qi Guo (NAOC)      

Time: Thursday, 3:00pm, April 16th   

Location: Lecture Hall, 3rd floor     

        

Abstract: The CDM model has been successful in interpreting a wide variety of observations, including the cosmic microwave background fluctuations (CMB), the large-scale clustering of galaxies in the local universe, the high-redshift power spectrum probed by the Lyman α forest, the baryon fractions of galaxy clusters, and etc. Thanks to the development of powerful parallel supercomputers, current N-body simulations can follow the growth of representative samples of dark matter halos at high resolution and in their full cosmological context on scales ranging from those of rich clusters to those of dwarf galaxies. The dark matter is, however, invisible and verifiable descriptions of the nature and origin of the Universe have to rely on analysis of observables. Galaxy is one of the basic populations of light emitters. They form through the condensation of gas at the centers of a hierarchically aggregating population of dark matter haloes, and are thus excellent tracers of the cosmological structures. Their formation does not, however, trace that of their dark matter halos in a simple manner, and the exponentially growing body of high-qualitygalaxy data coming from large surveys cannot be properly compared to the CDM model without a careful treatment of baryonic processes. Such detailed comparison is the most promising route to clarifying the complex astrophysics underlying galaxy formation, and it may also uncover problems with the CDM model which are not evident on larger scales. Here I present the most up-to-date galaxy formation models in the context of CDM cosmology and discuss whether it is possible to distinguish different cosmologies with current galaxy surveys.     

            

SHAO-USTC Lecture          

Title: AGN外流     

Speaker: Tinggui Wang (USTC)     

Time: Wednesday, 2:00pm,April 15th     

Location: Room 1617     

       

Group meetings and additional talks     

       

SHAO SDSS-IV meeting   

Location: Room 1714   

Time: Tuesday, April 14th   

14:30 - 15:30 Summary of Kentucky MaNGA Meeting (Fangting Yuan, Ting Xiao)     

15:30 - 15:40 APOGEE email update (Zhaoyu Li)     

15:40 - 16:30 Study of Milky Way Bulge with ARGOS Data (Yingying Zhou)     

   

Radio Astrophysics Group Seminar     

Location: 1617; Contact: Guangrui Yao < gryao@shao.ac.cn>     

Title: Recent proposal on re-mapping water megamaser in NGC 1068 and searching for 658 GHz maser lines     

Speaker: Feng Gao     

Time: Tuesday, 11:30am, Apr 14     

       

Stellar Cluster and Galaxy Seminar group seminar     

Location: 1617; Contact: Jian Fu <fujian@shao.ac.cn>     

http://202.127.29.3/pub/seminar_plan.html      

Title: Newly Discovered B-type Emission Stars in the LAMOST DR1   

Speaker: Chien-Cheng Lin     

Time: Wednesday, 10:30pm, Apr 15     

       

Blackhole accretion and High-energy astrophysics Seminar     

Location: 1608; Contact: Qixiang Yang <qxyang@shao.ac.cn>     

http://202.127.29.4/fyuan/journalclub.html     

       

Title: The role of feedback in accretion on Low Luminosity AGN: Sgr A* case study     

Speaker: Defu Bu     

Time: Tuesday, 2:00 pm, Apr 14     

       

Title:Powerful radiative jets in super-critical accretion disks around non-spinning black holes     

Speaker: Hui Yang     

Time: Friday, 10:00 am, Apr 17     

 
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