Optical-to-Ultraviolet Spectrum of Markarian 231

Optical-to-Ultraviolet Spectrum of Markarian 231

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Fast Facts
News release ID: STScI-2015-31
Release Date: Aug 27, 2015
Image Use: Copyright
About this image

This simplified spectral plot shows the radiation emitted from the center of a nearby galaxy that hosts a quasar. Visible and infrared light coming from a disk surrounding a central black hole in the middle of the galaxy is measured. Surprisingly, ultraviolet light from the disk, as measured by the Hubble Space Telescope, shows a drop in radiation from the disk. This is evidence for a large gap in the center of the disk that is likely carved out by a second black hole orbiting the primary black hole.

Active Galaxies/Quasars, Black Holes, Galaxies, Infographics, Interacting Galaxies, Spectra


NASA, ESA, and P. Jeffries (STScI)