SHAO Astrophysics Colloquia

Title: Pulsars and FRBS: Recent Developments   

Location： The Lecture Hall (third floor of Astronomy Building)    

Time:  3 PM, Nov. 10(Thursday)     

Speaker:  Richard Manchester, CSIRO Astronomy and Space Science

Abstract:   

Pulsars and Fast Radio Bursts (FRBs) are fascinating phenomena, both of which are “hot topics” in current astrophysical research. In both cases, the physics of sources is not well understood but, despite that, they are incredibly useful probes of a wide range of astrophysical problems. After a brief introduction describing their basic properties, I will review some recent developments in pulsar and FRB research, including a new model for estimating pulsar and FRB distances, improved tests of gravitational theories using binary pulsars and efforts to detect gravitational waves using pulsar timing arrays (PTAs). Other applications of PTA data sets will also be described. Finally, I will discuss how new and more sensitive radio telescopes such as the recently opened FAST radio telescope in Guizhou will contribute to pulsar and FRB research. 

Seminar talk

Galaxy Seminar

Title: Exploring Galactic Gas Flows During Cosmic Afternoon

Speaker: Prof. David Koo, Univ. of California, Santa Cruz

Time: 3 PM, Nov. 9 (Wednesday)   

Location: Middle conference room, 3rd floor

Abstract:

While inflowing gas is clearly needed during the formation of galaxies, the outflows of gas from galaxies are increasingly recognized as being also critical to explain key properties of galaxies. This talk will describe several of our discoveries that such galactic outflows of  cool gas are very common, almost ubiquitous, among strong star-forming, massive galaxies at moderate redshifts from 0.5 to 1.5. This era is during "cosmic afternoon" when average rates of star formation are declining from its peak ("cosmic noon") at redshifts about 2. This talk will also describe our current follow-up, larger, and deeper survey of these galactic winds. Called DEEPwinds, it is being conducted within fields (known as CANDELS), which possess especially deep, multi-wavelength data that richly complement our new spectra and are relevant to wind studies.

Group meetings and additional talks

Black hole Accretion and High-energy Astrophysics /Black Hole Feedback and Cosmic Ray Astrophysics Seminar

Location：1608

Time：9:00-11:00，Friday

Title: Feedback by AGN Jets and Wide-Angle Winds on a Galactic Scale

Speaker: Fulai Guo

https://arxiv.org/abs/1608.01370

Title: Lidov-Kozai Cycles with Gravitational Radiation: Merging Black Holes in Isolated Triple Systems

Speaker: Bin Liu

https://arxiv.org/abs/1608.07642