Swift-XRT image of the field around SDSS J113603.51+550430.9, obtained from the merged event file and restricted in the 0.5–10 keV energy range. The image is smoothed with a Gaussian kernel of 15 pixels (native pixel size of Swift-XRT is 2.357″) and binned by a factor of 2. Radio contours obtained at 6″ at 144 MHz are overlaid in white, while cyan circles mark the location of same optical sources highlighted in Fig. 1. The dashed yellow circle has a size of 500 kpc at the redshift of SDSS J113603.51+550430.9 while the green arrow indicates the position of a foreground/background source detected in the X-rays.