Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. It can be formed by the death of a massive star wherein its core gravitationally collapses inward upon itself, compressing to a point of zero volume and
Learn the definition of Supermassive black hole and browse a collection of 21 enlightening community discussions around the topic.
In subject area: Physics and Astronomy A Schwarzschild Black Hole is defined as a region in space where the gravitational field is so strong that light cannot escape, resulting in a singularity at the Schwarzschild radius. AI generated definition based on: Special Relativity, Electrodynamics, and ...
Define Black hole radiation. Black hole radiation synonyms, Black hole radiation pronunciation, Black hole radiation translation, English dictionary definition of Black hole radiation. n. A form of radiation believed to emanate from black holes, arising
The most plausible mechanism for triggering the outburst of black hole candidate X-ray transients is the ionization thermal instability. The disk instability models can give the observed mass flow in quiescence, but not the X-ray spectrum. Self-irradiation of the disk in outburst may not lead ...
Snowmass2021 Cosmic Frontier White Paper: Primordial black hole dark matter SimeonBird, ...Yu-DaiTsai, inPhysics of the Dark Universe, 2023 2.1Primordial black holes as dark matter Compact objects, particularly black holes, are one of the oldest models of dark matter. PBHs are the modern reali...
Stephen W. Hawking proposed in 1974 that subatomic particle pairs (photons, neutrinos, and some massive particles) arising naturally near the event horizon may result in one particle’s escaping the vicinity of the black hole while the other particle, of negative energy, disappears into it. The...
Physically speaking, with the given definition of ζ > 0 , ζ − 1 D is just the restriction to F of the Killing vector of the spacetime defining the static time of the external region of black holes. If, as above, v is the parameter of integral curves of D , ζ v itself is th...
The fundamental plane of black hole activity indicates a scale-free accretion and ejection physics in both SBHs and AGNs. Recently, Yang et al. [46] explored the fundamental plane relation in a sample of IMBH candidates with pc-scale radio emissions obtained from VLBI observations; which implie...
A momentous signal from space has confirmed decades of theorizing on black holes — and launched a new era of gravitational-wave astronomy.