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- Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.In cosmology, primordial black holes (PBHs) are hypothetical black holes that formed soon after the Big Bang.en.wikipedia.org/wiki/Primordial_black_holeIn cosmology, primordial black holes (PBHs) are black holes that we think might exist in the Universe today. These black holes might have been created just after the Big Bang.simple.wikipedia.org/wiki/Primordial_black_hole
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See all on WikipediaPrimordial black hole - Wikipedia
In cosmology, primordial black holes (PBHs) are hypothetical black holes that formed soon after the Big Bang. In the inflationary era and early radiation-dominated universe, extremely dense pockets of subatomic matter may have been tightly packed to the point of gravitational collapse, creating primordial black … See more
Depending on the model, primordial black holes could have initial masses ranging from 10 kg (the so-called Planck relics) to more than thousands of solar masses. However, primordial … See more
Dark matter problem
The dark matter problem, proposed in 1933 by Swiss-American astronomer Fritz Zwicky, … See moreA direct collapse black hole is the result of the collapse of unusually dense and large regions of gas, after the radiation-dominated era, while primordial black holes would have … See more
Primordial black holes could have formed in the very early Universe (less than one second after the Big Bang) during the inflationary era, … See more
A variety of observations have been interpreted to place limits on the abundance and mass of primordial black holes: See more
Wikipedia text under CC-BY-SA license Micro black hole - Wikipedia
Production of a black hole requires concentration of mass or energy within the corresponding Schwarzschild radius. It was hypothesized by Zel'dovich and Novikov first and independently by Hawking that, shortly after the Big Bang, the Universe was dense enough for any given region of space to fit within its own Schwarzschild radius. Even so, at that time, the Universe was not able to collapse into a singularity due to its uniform mass distribution and rapid growth. This, however…
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Primordial black hole - Simple English Wikipedia, the free …
- In 1783, an English clergyman called John Michell wrote that it might be possible for something to be so heavy you would have to go at the speed of light to get away from its gravity. Gravity gets stronger as something gets more massive. For a small thing, like a rocket, to escape from a larger thing, like Earth, it has to escape the pull of the Ea...
The Five Ages of the Universe - Wikipedia
Dec 29, 2007 · The book The Five Ages of the Universe discusses the history, present state, and probable future of the universe, according to cosmologists' current understanding. The book …
Black Hole Types - Science@NASA
Oct 22, 2020 · Scientists are actively hunting for examples of these so-called missing-link black holes. Numerous candidates have been identified but have proven difficult to confirm. …
What are primordial black holes? | Astronomy.com
Jul 10, 2019 · Primordial black holes could be a type of dark matter called MACHOs, which stands for massive compact halo objects, because astronomers think they’re found in the halos, or outskirts, of...
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原初黑洞 - 维基百科，自由的百科全书
原初黑洞（ primordial black hole ），又称为太初黑洞，是一种假想的黑洞类型。 这类黑洞不是由大质量恒星的 引力坍缩 形成的，而是来源于宇宙早期 大爆炸 暴涨时物质的超高密度。
What Are Primordial Black Holes? - IFLScience
May 9, 2024 · These are the primordial black holes. They formed within the first microseconds after the Big Bang, at a time when the universe was a hot dense plasma of particles. Now making a black hole...
原始ブラックホール - Wikipedia
原始ブラックホール[1][2] (げんしブラックホール、 英: primordial black holes 、PBH) とは、 ビッグバン 直後に形成された可能性のある仮説上の ブラックホール の分類である。 初期宇宙 …
What is a black hole? - Exploring Black Holes - NSF
The collision of two black holes -- an event detected for the first time ever by the Laser Interferometer Gravitational-Wave Observatory, or LIGO -- is seen in this still from a computer …
Primordial Black Holes May Have “Frozen” the Early …
Apr 13, 2023 · Primordial holes formed in the exotic conditions of the big bang may have become their own source of matter and radiation. The standard story of the early universe goes like this. When our...
What Are Primordial Black Holes? - Owlcation
Aug 26, 2024 · Stephen Hawking first mentioned primordial black holes (PBHs) in the 1970s as he developed his ideas for cosmology, findings that were a potential consequence of the radiation …
Hawking radiation - Wikipedia
Black hole evaporation produces a more consistent view of black hole thermodynamics by showing how black holes interact thermally with the rest of the universe. Unlike most objects, a …
Evidence of primordial black holes may be hiding in planets, or …
Dec 2, 2024 · Set to be published in the December issue of Physics of the Dark Universe and available online now, the theoretical study posits that a primordial black hole trapped within a …
How we might finally find black holes from the cosmic dawn
Jan 13, 2025 · Called primordial black holes, these hypothetical objects have attracted interest since the 1960s. Stephen Hawking wrote one of the earliest papers about their potential …
Dark Matter’s Secret Hideouts: Are Primordial Black Holes …
Jan 14, 2025 · Primordial black holes could reshape our understanding of dark matter. Researchers suggest these elusive cosmic phenomena might be hiding within hollow asteroids …
Black hole - Wikipedia
A black hole is a region of spacetime where gravity is so strong that nothing, not even light, can escape it. [2] Albert Einstein's theory of general relativity predicts that a sufficiently compact …
We overview the history of primordial black hole (PBH) research from the first papers around 50 years ago to the present epoch.
[2406.05736] The History of Primordial Black Holes - arXiv.org
Jun 9, 2024 · We overview the history of primordial black hole (PBH) research from the first papers around 50 years ago to the present epoch. The history may be divided into four …
How Many Black Holes Are Hiding? NASA Study Homes in on …
Jan 13, 2025 · Most telescopes can rather easily identify face-on supermassive black holes, though not edge-on ones. But there’s an exception to this that the authors of the new paper …
Primordial black hole - Wikiwand
In cosmology, primordial black holes (PBHs) are hypothetical black holes that formed soon after the Big Bang. In the inflationary era and early radiation-domina...
Primordial Black Holes - an overview | ScienceDirect Topics
Primordial Black Holes (PBHs) are a viable candidate to comprise some or all of the dark matter and provide a unique window into the high-energy physics of the early universe. This white …
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