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