Usually, galaxies this size accommodate for black holes that pack the equivalent of approximately 12 million solar masses. Hollywood's take on theorizing and visualizing gas spinning and dazzling in the clutches of a black hole's gravitational field, in Interstellar.
This is seventy times larger than that of the black hole, but the black hole is though still thirty times larger than expected for this size of galaxy. The gas is accelerated to high velocities due to the black hole's large gravitational field, causing this cause to emit light.
The black hole's growth has somehow managed to outpace the expansion of its home galaxy, but researchers aren't sure whether the black hole's growth was bolstered by an external force or if something retarded the growth of the galaxy.
That's what happened in England, where researchers at Keele University and the University of Central Lancashire had to throw their expectations out the window after measuring the impossibly large size of a black hole at the center of a newly discovered galaxy.
This is because, by the looks of it, the black hole at its core is way bigger than it should be, at least according to current theories of galactic evolution.
When this line of emission broadens as a result of the Doppler Effect, where the wavelength or the color of light from objects studied are blue- or red-shifted, depending on whether they're approaching us or moving away from us.
The speed of the gas is determined by the black hole's mass, so the researchers were then able to calculate that SAGE0536AGN's behemoth is as heavy as 350 million suns. Only time will tell whether SAGE0536AGN will go down as the first in a new class of galaxies or as a singular phenomenon that will forever remain a mystery. The central black hole may have grown much faster than the galaxy, or perhaps the galaxy stopped growing early on for some reason while the black hole kept gobbling up material.