Astronomers are Working on a 3D map of Cosmic Dawn universetoday storybywill
, astronomers have mapped the faint variations in temperature that existed 380,000 years after the Big Bang., astronomers have observed galaxies as they existed roughly 1 billion years after the Big Bang . This has led to a greater understanding of how galaxies evolved and the possible role of Dark Matter and Dark Energy in the process. However, there is a gap between these observations of the CMB and early galaxies: the aforementioned “Dark Ages” .
Astronomers are interested in the atomic composition of these early stars since this would show how long they took to heat the intergalactic medium and cause reionization to occur. A key element here is high-energy radiation produced by binary stars once one of them goes supernova, collapsing into a black hole or neutron star and eventually consuming their companion.
“Our results require that even before reionization and by as late as 450 million years after the Big Bang, the gas between galaxies must have been heated by X-rays. These likely came from binary systems where one star loses mass to a companion black hole.
This includes a 2.1-factor increase for light emitted about 650 million years after the Big Bang of 7.9) and a 2.6-factor increase for radiation emitted about 450 million years after the Big Bang . This represents a great step forward for the project and astronomers’ understanding of the early Universe.
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