200 citations · 1.4k across the 45 of their papers we have counts for
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CG X-1: an eclipsing Wolf-Rayet ULX in the Circinus galaxy
Yanli Qiu, Roberto Soria, Song Wang +7
We investigated the time-variability and spectral properties of the eclipsing X-ray source Circinus Galaxy X-1 (GG X-1), using Chandra, XMM-Newton and ROSAT. We phase-connected the…
Time-Variable Aluminum Absorption in the Polar AR Ursae Majoris, and an Updated Estimate for the Mass of the White Dwarf
Yu Bai, Stephen Justham, JiFeng Liu +3
We present spectra of the extreme polar AR Ursae Majoris (AR UMa) which display a clear Al I absorption doublet, alongside spectra taken less than a year earlier in which that feat…
Relativistic baryonic jets from an ultraluminous supersoft X-ray source
Ji-Feng Liu, Yu Bai, Song Wang +10
The formation of relativistic jets by an accreting compact object is one of the fundamental mysteries of astrophysics. While the theory is poorly understood, observations of relati…
Puzzling accretion onto a black hole in the ultraluminous X-ray source M101 ULX-1
Jifeng Liu, Joel N. Bregman, Yu Bai +2
There are two proposed explanations for ultraluminous X-ray sources (ULXs) with luminosities in excess of erg s. They could be intermediate-mass black holes (more…