2. Server
  3. Observed blackholes

    4. List of observed black holes

    All types BH-BH XRB XRB t XRB P EG XRB P EG XRB BH XRB nBHB S MW GC EG GC

    XRB P - X-ray binaries

    Name Type Mass Spin Companion Reference
    Cyg X-1 XRB P 14.8±1.0 q=1.3 Gandhi et al. (2019)
    Cyg X-1 XRB P 14.81±0.98 19.16±1.90 OI 134.4 Porb Wiktorowicz et al. (2014)
    Cyg X-1 XRB P 14.8±1.0 >0.95 McClintock et al. (2014)
    Cyg X-1 XRB P 13—23 25—35 Ziolkowski et al. (2014)