报告题目：Globular Cluster X-ray Sources
Globular clusters (GCs) are gravitationally-bound, massive stellar populations. Due to the massive number of stellar objects, GCs harbor the super dense core region where stellar density is 4-5 orders of magnitudes higher than other parts of the galaxy. This unique feature of GCs makes them the favorable environment for enormous N-body (N>2) close interactions. The fact that GCs are old indeed ensures that an unignorable portion compact objects like neutron stars, white dwarfs or stellar-mass black holes, which are strongly involved in gravitational interaction with other stellar objects, during which a normal star is replaced or “captured” by a compact object, forming the so-called X-ray binaries (XRBs). Observations with X-ray facilities over the last decades has revealed an overabundance of X-ray sources in GCs, which is consistent with our theory of how XRBs are formed in GCs. The ongoing research of these X-ray sources can not only shed light on our understanding of XRBs per se but also can it enrich our knowledge of the dynamical evolutional properties of GCs as entireties.
My talk is structured as follow, I will first give a brief introduction on observational properties of GCs and the associated XRBs and then move on to the methodologies we use to identify different XRBs. Finally, I will present my recent result on the X-ray study of the GC M3 (NGC 5272).