Monday, 17 December, 2018

Supermassive black hole from early universe found in space

Bitcoin surges past $15,000 for first time as concerns mount Eduardo Bañados - Contact - Carnegie Observatories User Webpages - Carnegie Institution for Science
Laurie Berry | 11 December, 2017, 23:07

If black holes started off with more mass, it could explain the existence of one that was already so massive at such an early stage of cosmic evolution. I am interested in the understanding of how the first galaxies and black holes formed and evolved across cosmic time, their role in cosmic reionization, and the mining of big datasets.

Banados said the quasar provides a unique baby picture of the universe, when it was just 5 percent of its current age.

The mass of the black hole is 800 million times that of the sun, the university said, and it sits in the center of a galactic object called a quasar. That means the quasar is not only the most distant - it is also the only example we have that can be seen before the universe became reionized. Scientists have now found a super-sized black hole. Cosmic inflation (which is thought to have started a fraction of a second after the Big Bang) was the period during which a mass of hot particles spread through the darkness unbelievably fast, possibly because of repulsive gravity, until they cooled down and formed an enormous cloud of neutral hydrogen gas 400,000 years later. As it expanded, it cooled.

"This is one of the most rare and extreme clumps of dark matter in the universe", said Haworth.

The characterization of the quasar host galaxy was carried out with the IRAM/NOEMA and JVLA interferometers and the findings are reported in a companion article published in The Astrophysical Journal Letters led by Bram Venemans. Eventually, gravity condensed matter into the first stars and galaxies, which in turn produced light in the form of photons. The ionization of the cosmos' gas allowed light to move more freely through space.

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"Despite extensive searches, it took more than half a decade to catch a glimpse of something this far back in the history of the Universe", said Dr Bañados. As they said, they estimate that in the universe there are only 20 to 100 such distant and bright quasars.

"This great distance makes such objects extremely faint when viewed from Earth".

"This is a very exciting discovery, found by scouring the new generation of wide-area, sensitive surveys astronomers are conducting using NASA's Wide-field Infrared Survey Explorer in orbit and ground-based telescopes in Chile and Hawaii", said Daniel Stern of NASA's Jet Propulsion Laboratory in Pasadena. The observations give us a riveting peek back in time.

These larger black holes have had more time to grow in the hearts of galaxies since the Big Bang, compared with the young one just observed. It is surrounded by neutral hydrogen, indicating that it is from the period called the epoch of reionization, when the universe's first light sources turned on.

The unexpected discovery was based on data gathered from observatories around the world.

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