Monster Black Hole Found In The Early Universe
In April 2017, EHT started observation of the black hole in the heart of Messier 87. “In all, eight radio observatories on six mountains and 4 continents observed the galaxy in Virgo on and off for 10 days in April 2017” to provide the information yielding the picture two years later in April 2019.
Instead we infer their existence by observing high-power phenomena similar to X-ray emission and jets, and the motions of close by objects in orbit around the hidden mass. An added complication is that comparable phenomena are observed round much less massive neutron stars and pulsars. Therefore, identification as a black hole requires astronomers to make an estimate of the mass of the item and its measurement. A black hole is confirmed if no different object or group of objects could be so massive and compact.
Black holes are … Read More