Seminar talk 


Title: Multi-wavelength variability and QPOs (Quasi Periodic Oscillations) in Blazars 

Speaker: Alok Gupta (ARIES, India) 

Time: Thursday , 10:00am,Jan 22 

Location: the middle conference room 


Abstract: With enhanced multi-wavelength facilities and revolution due to communication facilities, now a days, doing simultaneous multi-wavelength observations of astronomical objects have become possible and very helpful to understand the physics of emission in different EM bands.Blazar is a sub-class of radio-loud AGN which emit radiation in the complete EM spectrum. The emission is highly variable, and predominantly non-thermal. So, blazars are among one of the best targets to study in simultaneous in complete EM band. In the present colloquium, I would report our recent results based on multi-wavelength blazars flux and polarization variability, spectral energy distribution, and detection of quasi-periodic oscillations in time series data on diverse timescales.  


Group meetings and additional talks 


Observational High Energy Astrophysics Group Seminar  

Location: 1401; Contact: Zhen Yan <>  

Title: The black hole mass - stellar velocity dispersion relation of narrow-line Seyfert 1 galaxies (Hui Zhang)  

NuSTAR Reveals Relativistic Reflection But NoUltra-Fast Outflow In The Quasar PG 1211+143(Wenda Zhang)  

NuSTAR Observations of X-Ray Binaries (Zhen Yan)  

Time: Monday, 10:30am, Jan 19  


Blackhole accretion and High-energy astrophysics Seminar  

Location: 1608; Contact: Qixiang Yang <

Title: Constraints on Relativistic Jets in Quiescent Black Hole X-ray Binaries from Broadband Spectral Modeling  

Speaker: Qi-Xiang Yang  

Time: Friday, 10:00am, Jan 23 


Research Center for Galaxy and Cosmology is the division engaging on the astrophysical research in Shanghai Astronomical Observatory. The research area includes cosmology, large scale structure, galaxy formation and evolution, the active galactic nucleus and compact objects, the star cluster and the structure of the Milk Way etc.

CGC participates in many international sky survey projects, including the LAMOST sky survey, the Sloan Digital Sky Survey IV ,BigBoss,LSST etc. CGC maintains close partnerships with many astronomical   research institutes.

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