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The high energy X-ray probe (HEX-P): studying extreme accretion with ultraluminous X-ray sources

Maitra, Chandreyee; Mori, Kaya; Wolter, Anna +25 more

Introduction: Ultraluminous X-ray sources (ULXs) represent an extreme class of accreting compact objects: from the identification of some of the accretors as neutron stars to the detection of powerful winds travelling at 0.1–0.2 c, the increasing evidence points towards ULXs harbouring stellar-mass compact objects undergoing highly super-Eddington…