Unlike stellar black holes that would have a mass larger than the Sun, prehistoric black holes might have the mass of a mere world or less. A planet-mass black hole would be smaller sized than an apple, and an asteroid-mass black hole might be smaller than a grain of sand. From their design, they reveal that some of these black holes could form the seeds of the first stars, and the biggest primitive black holes could have rapidly grown into supermassive black holes by gobbling up surrounding hydrogen and helium. The tiniest primitive black holes would be common enough to describe dark matter.
Being able to explain black holes, galactic advancement, and dark matter all in one would be a remarkable theoretical advantage.
Its that time once again. Time to look at a possible design to describe dark matter. In this case, a seasonal favorite known as prehistoric great voids. Black holes have actually long been proposed as the source of dark matter. In numerous methods, they are the perfect candidate because they just communicate with light and matter gravitationally. However stellar-mass great voids have been dismissed observationally. There simply arent enough of them to represent dark matter.
Unlike outstanding black holes that would have a mass larger than the Sun, prehistoric black holes could have the mass of a simple world or less. A planet-mass black hole would be smaller sized than an apple, and an asteroid-mass black hole could be smaller sized than a grain of sand.
From their model, they reveal that some of these black holes could form the seeds of the first stars, and the biggest primitive black holes could have rapidly grown into supermassive black holes by gobbling up surrounding hydrogen and helium. The smallest primitive black holes would be common enough to explain dark matter.
The James Webb telescope could find evidence of prehistoric black holes in the future. Credit: ESA
Having the ability to describe great voids, galactic development, and dark matter all in one would be an incredible theoretical boon. However the concept is ineffective unless the design can be proven. The authors think the James Webb telescope may be able to do just that. One of the things about primitive black holes is that they likely discharge light through [Hawking radiation] (/ post/great-escape/). According to Hawkings model, small great voids ought to trigger an excess of infrared light in the early universe, which the Webb telescope need to have the ability to get.
If the James Webb Space Telescope does launch this week as planned, and all goes well, we should be able to put this concept to the test. It would be a great vacation gift to finally comprehend what dark matter really is.
Referral: Cappelluti, Nico, Günther Hasinger, and Priyamvada Natarajan. “Exploring the high-redshift PBH-LCDM Universe: early black hole seeding, the very first stars and cosmic radiation backgrounds.” arXiv preprint arXiv:2109.08701 (2021 ).
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