4 papers
The Secular Periodic Evolution of X-ray Quasi-periodic Eruptions Driven by Star-disc Collisions
Jiajun Xian, Fupeng Zhang, Liming Dou +1
We study the secular periodic evolution of quasi-periodic eruptions (QPEs) for GSN069 and eRO-QPE2 assuming that they are driven by star-disc collisions. We set up numerical simula…
Relation between the local width and linear halo mass density of cosmic filaments
Weishan Zhu, Tian-Rui Wang, Fupeng Zhang +2
Large-scale cosmic filaments may have played an important role in shaping the properties of galaxies. Meanwhile, cosmic filaments are believed to harbor a substantial portion of th…
A centi-pc-scale compact radio core in the nearby galaxy M60
Xiaofeng Li, Jun Yang, Xiaopeng Cheng +7
M60, an elliptical galaxy located 16.5~Mpc away, has an active nucleus with a very low luminosity and an extremely low accretion rate. Its central supermassive black hole has a mas…
A new Hyper-Runaway star discovered from LAMOST and GAIA: ejected almost in the galactic rotation direction
Yin-Bi Li, A-Li Luo, Gang Zhao +11
In this paper, we report the discovery of a new late-B type unbound hyper-runaway star (LAMOST-HVS4) from the LAMOST spectroscopic surveys. According to its atmospheric parameters,…