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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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