Dr. Brandt
Dr. Brandt
active changes density despite engines enormous individual remarkably space
Despite the enormous changes in the space density of back holes, the individual engines powering active galactic nuclei are remarkably stable.
black census grown history holes measure
We wanted a census of all the black holes and we wanted to know what they are like. We also wanted to measure how black holes have grown over the history of the Universe.
active black centers galaxy holes massive million presume solar super
We find active Super Massive Black Holes at the centers of massive galaxies. Our Galaxy also has its own black hole at its center measuring 2.6 million solar masses. Our black hole is not active today, but we presume it was active in the past.
active black change cosmic feed grow history holes
We would like to know if active galactic nuclei change over cosmic time. Do black holes feed and grow in the same way over the history of the Universe?