42 citations · 126 across the 5 of their papers we have counts for
5 papers
Spectral Energy Distribution of the inner accretion flow around Sgr A* -- Clue for a weak outflow in the innermost region
Ren-Yi Ma, Shawn R. Roberts, Ya-Ping Li +1
Sgr A* represents a unique laboratory for the detailed study of accretion processes around a low-luminosity supermassive black hole (SMBH). Recent X-ray observations have allowed f…
The Robustness of Cosmological Hydrodynamic Simulation Predictions to Changes in Numerics and Cooling Physics
Shuiyao Huang, Neal Katz, Romeel Davé +8
We test and improve the numerical schemes in our smoothed particle hydrodynamics (SPH) code for cosmological simulations, including the pressure-entropy formulation (PESPH), a time…
Towards Self-Consistent Modelling of the Sgr A* Accretion Flow: Linking Theory and Observation
Shawn R. Roberts, Yan-Fei Jiang, Q. Daniel Wang +1
The interplay between supermassive black holes (SMBHs) and their environments is believed to command an essential role in galaxy evolution. The majority of these SMBHs are in the r…
X-ray emissivity of old stellar populations: a local group census
Chong Ge, Zhiyuan Li, Xiaojie Xu +6
We study the unresolved X-ray emission in three Local Group dwarf elliptical galaxies (NGC 147, NGC 185 and NGC 205) using XMM-Newton observations, which most likely originates fro…
X-ray Emission from Charge Exchange in the Cygnus Loop SNR
Shawn R. Roberts, Q. Daniel Wang
The Cygnus Loop has been the focus of substantial debate concerning the contribution of charge exchange (CX) to supernova remnant (SNR) X-ray emission. We take advantage of a disti…