Ultraluminous X-ray sources (ULXs) are bright extragalactic sources with X-ray luminosities above 1039 erg s−1 powered by accretion onto compact objects. According to the first studies performed with XMM-Newton, ULXs seemed to be excellent candidates to host intermediate-mass black holes (102 − 4M⊙). However, in the last years, the interpretation of super-Eddington accretion onto stellar-mass black holes or neutron stars for most ULXs has gained a strong consensus. One critical missing piece to confirm the super-Eddington scenario was the direct detection of the massive, radiatively driven winds expected as atomic emission/absorption lines in the ULX spectra. The first evidence for winds was found as residuals in the soft X-ray spectra of U...
Studies of X-ray continuum emission and flux variability have not conclusively revealed the nature o...
The luminosities of ultraluminous X-ray sources (ULXs) require an exotic solution with either superc...
The controversy over whether ultraluminous X-ray sources (ULXs) contain a new intermediate-mass clas...
Ultraluminous X-ray sources (ULXs) are bright extragalactic sources with X-ray luminosities above 10...
Ultraluminous X-ray sources (ULXs) are non-nuclear point sources exceeding the Eddington luminosity ...
Ultraluminous X-ray sources are extragalactic, off-nucleus, point sources in galaxies, and have X-ra...
Ultraluminous X-ray sources are powered by super-Eddington accretion onto stellar-mass compact objec...
The nature of ultraluminous X-ray sources (ULXs) – off-nuclear extragalactic sources with luminosity...
We review observations of ultraluminous X-ray sources (ULXs). X-ray spectroscopic and timing studies...
International audienceMost ultraluminous X-ray sources (ULXs) are believed to be powered by super-Ed...
ABSTRACT Most ultraluminous X-ray sources (ULXs) are thought to be powered by super-...
Recent evidence - in particular the hard X-ray spectra obtained by NuSTAR, and the large amplitude h...
Copyright © 2018 by the Editors.All rights reserved. The origin of Ultraluminous X-ray sources (ULXs...
Studies of X-ray continuum emission and flux variability have not conclusively revealed the nature o...
Ultraluminous X-ray sources (ULXs) are extra-galactic, non-nuclear point sources, with X-ray luminos...
Studies of X-ray continuum emission and flux variability have not conclusively revealed the nature o...
The luminosities of ultraluminous X-ray sources (ULXs) require an exotic solution with either superc...
The controversy over whether ultraluminous X-ray sources (ULXs) contain a new intermediate-mass clas...
Ultraluminous X-ray sources (ULXs) are bright extragalactic sources with X-ray luminosities above 10...
Ultraluminous X-ray sources (ULXs) are non-nuclear point sources exceeding the Eddington luminosity ...
Ultraluminous X-ray sources are extragalactic, off-nucleus, point sources in galaxies, and have X-ra...
Ultraluminous X-ray sources are powered by super-Eddington accretion onto stellar-mass compact objec...
The nature of ultraluminous X-ray sources (ULXs) – off-nuclear extragalactic sources with luminosity...
We review observations of ultraluminous X-ray sources (ULXs). X-ray spectroscopic and timing studies...
International audienceMost ultraluminous X-ray sources (ULXs) are believed to be powered by super-Ed...
ABSTRACT Most ultraluminous X-ray sources (ULXs) are thought to be powered by super-...
Recent evidence - in particular the hard X-ray spectra obtained by NuSTAR, and the large amplitude h...
Copyright © 2018 by the Editors.All rights reserved. The origin of Ultraluminous X-ray sources (ULXs...
Studies of X-ray continuum emission and flux variability have not conclusively revealed the nature o...
Ultraluminous X-ray sources (ULXs) are extra-galactic, non-nuclear point sources, with X-ray luminos...
Studies of X-ray continuum emission and flux variability have not conclusively revealed the nature o...
The luminosities of ultraluminous X-ray sources (ULXs) require an exotic solution with either superc...
The controversy over whether ultraluminous X-ray sources (ULXs) contain a new intermediate-mass clas...