255 citations · 1.2k across the 17 of their papers we have counts for
4 papers · 1 filter
From ultraluminous X-ray sources to ultraluminous supersoft sources: NGC 55 ULX, the missing link
C. Pinto, W. Alston, R. Soria +8
In recent work with high-resolution grating spectrometers (RGS) aboard XMM-Newton Pinto et al. (2016) have discovered that two bright and archetypal ultraluminous X-ray sources (UL…
Crossing the Eddington limit: examining disk spectra at high accretion rates
Andrew D. Sutton, Douglas A. Swartz, Timothy P. Roberts +3
The faintest ultraluminous X-ray sources (ULXs), those with 0.3-10 keV luminosities 1 < L_X/10^39 < 3 erg s^-1, tend to have X-ray spectra that are disk-like but broader than expec…
The ultraluminous X-ray source NGC 5643 ULX1: a large stellar mass black hole accreting at super-Eddington rates?
F. Pintore, L. Zampieri, A. D. Sutton +3
A sub-set of the brightest ultraluminous X-ray sources (ULXs), with X-ray luminosities well above erg s, typically have energy spectra which can be well described…
A variable ULX and possible IMBH candidate in M51a
Hannah M. Earnshaw, Timothy P. Roberts, Lucy M. Heil +7
ULX-7, in the northern spiral arm of M51, demonstrates unusual behaviour for an ultraluminous X-ray source, with a hard X-ray spectrum but very high short-term variability. This su…