... analysed nine years worth of gamma-ray output from 739 blazars – galaxies with monster black holes at their centres – and... This map of the entire sky shows the location of 739 blazars used in the Fermi Gamma-ray Space Telescope’s measurement of the ...
...observations of this phenomenon closely resemble the ORCs in features such as the edge-brightening or the absence of a visual blazar or radio galaxy at the centre,” so the objects true identity, for the moment, is still something of a mystery. Though...
... white dwarves in small dual-star systems), eruptive variables (accretive white dwarves), active galaxy nuclei flashes (blazars, quazars, supermassive black holes), dual star systems of unknown origins, superfast flashes of stars of the UV Kit type...