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A primordial black hole is the result of the direct collapse of energy, ionized matter, or both, during the inflationary or radiation-dominated eras, while a direct collapse black hole is the result of the collapse of unusually dense and large regions of gas. [29]
A 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 resulted from the direct collapse of energy, ionized matter, or both, during the inflationary or radiation-dominated eras. [64]
In physics, black hole thermodynamics [1] is the area of study that seeks to reconcile the laws of thermodynamics with the existence of black hole event horizons.As the study of the statistical mechanics of black-body radiation led to the development of the theory of quantum mechanics, the effort to understand the statistical mechanics of black holes has had a deep impact upon the ...
The Office of Naval Research defines DEWs as “electromagnetic systems capable of converting chemical or electrical energy to radiated energy and focusing it on a target, resulting in physical ...
1966 — Yakov Zel’dovich and Igor Novikov propose searching for black hole candidates among binary systems in which one star is optically bright and X-ray dark and the other optically dark but X-ray bright (the black hole candidate) [1] 1967 — Jocelyn Bell discovers and analyzes the first radio pulsar, direct evidence for a neutron star [2]
In all collapse models, the noise effect must prevent quantum mechanical linearity and unitarity and thus cannot be described within quantum-mechanics. [21]: 423 Because the noise responsible for the collapse induces Brownian motion on each constituent of a physical system, energy is not conserved. The kinetic energy increases at a constant rate.
Recent Russian attacks have caused significant damage to the Ukrainian power system, but a total collapse is unlikely, the head of Ukraine's national grid company Ukrenergo Volodymyr Kudrytskyi ...
A study published in Physical Review Letters in 2024 argues that the formation of a kugelblitz is impossible due to dissipative quantum effects like vacuum polarization, which prevent sufficient energy buildup to create an event horizon. [3] The study concludes that such a phenomenon cannot occur in any realistic scenario within our universe.