The 2005 Outburst of the Halo Black Hole X‐Ray Transient XTE J1118+480
The 2005 Outburst of the Halo Black Hole X‐Ray Transient XTE J1118+480
We present optical and infrared monitoring of the 2005 outburst of the halo black hole X-ray transient XTE J1118+480. We measured a total outburst amplitude of ~5.7+-0.1 mag in the R band and ~5 mag in the infrared J, H and K_s bands. The hardness ratio HR2 (5-12 keV/3-5 keV) …