28 citations · 77 across the 9 of their papers we have counts for
9 papers · 1 filter
A Multiwavelength Assessment Disfavoring the X-ray Binary Origin of He III Regions in Metal-Poor Star-Forming Dwarf Galaxies
Ivan Altunin, Christopher Ellis, Richard M. Plotkin +9
Recent observations of metal-poor, star-forming dwarf galaxies reveal He III regions, traced by nebular He II 4686 emission that require a strong source of extreme-ultraviolet (EUV…
Comprehensive Radio Monitoring of the Black Hole X-ray Binary Swift J1727.81613 during its 20232024 Outburst
Andrew K. Hughes, Francesco Carotenuto, Thomas D. Russell +39
This work presents comprehensive multi-frequency radio monitoring of the black hole low-mass X-ray binary Swift J1727.81613, which underwent its first recorded outburst after it…
Investigating MAXI J1752-457 with NuSTAR in the aftermath of a superburst
Sean N. Pike, Hitoshi Negoro, Douglas Buisson +5
We present two NuSTAR observations of the X-ray transient, MAXI J1752-457, following a superburst which was observed by MAXI/GSC in November, 2024. NuSTAR follow-up confirmed that…
Reprocessing from highly ionized gas in the soft spectral state of V4641 Sgr with NuSTAR
Riley M. T. Connors, Joey Neilsen, Aarran W. Shaw +6
V4641 Sgr is a low-mass black hole X-ray binary system with somewhat puzzling spectral characteristics during its soft state. Recent high-resolution spectroscopic studies of V4641…
X-ray measurement of a high-mass white dwarf and its spin for the intermediate polar IGR J18434-0508
Julian Gerber, Jeremy Hare, John A. Tomsick +8
IGR J18434-0508 is a Galactic Intermediate Polar (IP) type Cataclysmic Variable (CV) previously classified through optical spectroscopy. The source is already known to have a hard…
Investigating the Ultra-Compact X-ray Binary Candidate SLX 1735-269 with NICER and NuSTAR
David Moutard, Renee Ludlam, Malu Sudha +8
We present two simultaneous NICER and NuSTAR observations of the ultra-compact X-ray binary (UCXB) candidate SLX 1735-269 while the source was in two different spectral states. Usi…
Measuring the masses of Intermediate Polars with NuSTAR: V709 Cas, NY Lup and V1223 Sgr
A. W. Shaw, C. O. Heinke, K. Mukai +3
The X-ray spectra of intermediate polars can be modelled to give a direct measurement of white dwarf mass. Here we fit accretion column models to NuSTAR spectra of three intermedia…
Up and Down the Black Hole Radio/X-ray Correlation: the 2017 mini-outbursts from Swift J1753.5-0127
R. M. Plotkin, J. Bright, J. C. A. Miller-Jones +20
The candidate black hole X-ray binary Swift J1753.5-0127 faded to quiescence in 2016 November, after a prolonged outburst that was discovered in 2005. Nearly three months later the…
The nova-like nebular optical spectrum of V404 Cygni at the beginning of the 2015 outburst decay
F. Rahoui, J. A. Tomsick, P. Gandhi +7
We report on FORS2 optical spectroscopy of the black hole X-ray binary V404 Cygni, performed at the very beginning of its 2015 outburst decay, complemented by quasi-simultaneous $S…