124 citations · 857 across the 30 of their papers we have counts for
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astro-ph.HE2013★ 12 cited
VLT/FORS2 observations of four high-luminosity ULX candidates
M. Heida, P. G. Jonker, M. A. P. Torres +4
We obtained VLT/FORS2 spectra of the optical counterparts of four high-luminosity (L_X >= 10^40 erg/s) ULX candidates from the catalog of Walton (2011). We first determined accurat…
astro-ph.HE2013★ 121 cited
Ultra-Luminous X-Ray Sources in the Most Metal Poor Galaxies
A. H. Prestwich, M. Tsantaki, A. Zezas +5
Ultra-Luminous X-ray sources (ULX) are X-ray binaries with Lx>1E^39 ergs/s. The most spectacular examples of ULX occur in starburst galaxies and are now understood to be young, lum…