A mass of less than 15 solar masses for the black hole in an ultraluminous X-ray source

Puzzling accretion onto a black hole in the ultraluminous X-ray source M 101 ULX-1

(2013) Ji-Feng Liu et al.   NATURE

COMPTONIZED PHOTON SPECTRA OF SUPERCRITICAL BLACK HOLE ACCRETION FLOWS WITH APPLICATION TO ULTRALUMINOUS X-RAY SOURCES

(2012) T. Kawashima et al.   ASTROPHYSICAL JOURNAL

Bright radio emission from an ultraluminous stellar-mass microquasar in M 31

(2012) Matthew J. Middleton et al.   NATURE

ACHANDRAOBSERVATION OF THE NEARBY SCULPTOR GROUP Sd GALAXY NGC 7793

(2011) Thomas G. Pannuti et al.   ASTRONOMICAL JOURNAL

The supergiant optical counterpart of ULX P13 in NGC 7793

(2011) C. Motch et al.   ASTRONOMISCHE NACHRICHTEN

THE GHOSTS SURVEY. I.HUBBLE SPACE TELESCOPEADVANCED CAMERA FOR SURVEYS DATA

(2011) D. J. Radburn-Smith et al.   ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

Ultraluminous X-ray sources in the Chandra and XMM-Newton era

(2011) Hua Feng et al.   NEW ASTRONOMY REVIEWS

THE ARAUCARIA PROJECT: FIRST CEPHEID DISTANCE TO THE SCULPTOR GROUP GALAXY NGC 7793 FROM VARIABLES DISCOVERED IN A WIDE-FIELD IMAGING SURVEY

(2010) Grzegorz Pietrzyński et al.   ASTRONOMICAL JOURNAL

Fundamental parameters of B supergiants from the BCD system

(2009) J. Zorec et al.   ASTRONOMY & ASTROPHYSICS

The ultraluminous state

(2009) Jeanette C. Gladstone et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Reprocessing of X-rays in the outer accretion disc of the black hole binary XTE J1817−330

(2008) Marek Gierliński et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY