200 citations · 759 across the 13 of their papers we have counts for
13 papers
Circumstellar interaction in the extreme white dwarf merger remnant ZTF\,J1901+1458: A new class of white dwarf merger remnants with X-ray emission
Aayush Desai, Ilaria Caiazzo, Stephane Vennes +31
Double degenerate white dwarf (WD) mergers can exhibit extreme magnetic fields exceeding G and rapid rotation, but their spectral-energy distributions and high-energy emis…
Non-interacting black hole binaries with Gaia and LAMOST
Grzegorz Wiktorowicz, Youjun Lu, Łukasz Wyrzykowski +4
Until recently, black holes (BHs) could be discovered only through accretion from other stars in X-ray binaries, or in merging double compact objects. Improvements in astrometric a…
A wide star-black-hole binary system from radial-velocity measurements
Jifeng Liu, Haotong Zhang, Andrew W. Howard +52
All stellar mass black holes have hitherto been identified by X-rays emitted by gas that is accreting onto the black hole from a companion star. These systems are all binaries with…
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…
Globular cluster formation efficiencies from black-hole X-ray binary feedback
Stephen Justham, Eric W. Peng, Kevin Schawinski
We investigate a scenario in which feedback from black-hole X-ray binaries (BHXBs) sometimes begins inside young star clusters before strong supernova feedback. Those BHXBs could r…
On the role of recombination in common-envelope ejections
N. Ivanova, S. Justham, Ph. Podsiadlowski
The energy budget in common-envelope events (CEEs) is not well understood, with substantial uncertainty even over to what extent the recombination energy stored in ionised hydrogen…
The binarity of Milky Way F,G,K stars as a function of effective temperature and metallicity
Shuang Gao, Chao Liu, Xiaobin Zhang +3
We estimate the fraction of F,G,K stars with close binary companions by analysing multi-epoch stellar spectra from SDSS and LAMOST for radial velocity (RV) variations. We employ a…
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…
Hydrogen lines in LAMOST low resolution spectra of RR Lyrae stars
F. Yang, L. Deng, C. Liu +14
The LAMOST spectroscopic survey for Galactic structure and evolution has been in operation since October 2012, following a one-year pilot survey. The pilot survey produced a data r…
Another thread in the tapestry of stellar feedback: X-ray binaries
Stephen Justham, Kevin Schawinski
We consider X-ray binaries (XBs) as potential sources of stellar feedback. XBs observationally appear able to deposit a high fraction of their power output into their local interst…
Heavily Obscured AGN in Star-Forming Galaxies at z~2
E. Treister, C. Cardamone, K. Schawinski +10
We study the properties of a sample of 211 heavily-obscured Active Galactic Nucleus (AGN) candidates in the Extended Chandra Deep Field-South selecting objects with f_24/f_R>1000 a…
Seeking the Progenitors of Type Ia Supernovae
Ferdinando Patat
The nature of the progenitor system[s] of Type Ia Supernovae is still unclear. In this contribution I review the projects that have been undertaken to answer this question and the…