https://phys.org/news/2019-03-astronomers-supermassive-black-hole-radio.html > In AGNs, the accreting material is reprocessed by the surrounding nuclear environment, so that these objects are observable at all wavelengths, from radio to gamma-rays. However, the structure of the nuclear environment still baffles scientists, and more studies, especially in the X-ray wavelength, are required in order resolve any uncertainties regarding this subject. Such observations could be a powerful tool for the investigation of the accretion-ejection physics in the neighborhood of supermassive black holes in AGNs. > Broad-line radio galaxies (BLRGs), like PKS 2251+11 at a redshift of approximately 0.33, are excellent targets for high-quality X-ray observations due to the fact that they have the highest X-ray fluxes in the radio-loud population of AGNs. Therefore, high X-ray luminosity and the relative proximity of PKS 2251+11 make it an ideal candidate for a detailed analysis of the accretion regions in radio galaxies.