Results 281 to 290 of about 167,927 (317)

Study on broadband vibration reduction characteristics and optimal design of the acoustic black hole plate with damping oscillators. [PDF]

Sci Rep
Yang C, Yu H, Ye T.
europepmc   +1 more source

Acoustic black hole immersed sonoreactor for high-efficiency cavitation treatment. [PDF]

Ultrason Sonochem
Chen C, Liu Y, Wang C, Guo J, Lin S.
europepmc   +1 more source

Galaxy Tomography with the Gravitational Wave Background from Supermassive Black Hole Binaries

Chen Y.
europepmc   +1 more source

Black hole jets on the scale of the Cosmic Web

Oei MS, Hardcastle MJ, Timmerman R, Gast AR, Botteon A, Rodriguez AC, Stern D, Rivera GC, Weeren RJv, Röttgering HJ, Intema HT, de Gasperin F, Djorgovski S.   +12 more
europepmc   +1 more source

The Thermodynamics of Black Holes [PDF]

Living Reviews in Relativity, 2001
46 pages, no figures, plain latex file; submitted to Living Reviews in Relativity.
Robert M Wald, Wald Robert M
exaly   +7 more sources

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Black Stars, Not Holes

Scientific American, 2009
The article discusses the prevention of the formation of black holes as a result of quantum effects and how these effects may give rise to dense entities called black stars instead. Topics include an overview of the theoretical physics of black holes, such as Einstein's field equations from his general relativity theory, a description and analysis of ...
BARCELO' C, LIBERATI S, SONEGO, Sebastiano, VISSER M.   +3 more
openaire   +3 more sources

Black hole or no black hole?

Nature, 1990
Astronomers are among the most international of scientists. Yet chauvinism surfaces on a cosmic scale where the anxious search for a massive black hole at the centre of our Galaxy is concerned. The prodigious amounts of energy emitted from tiny regions at the centres of some nearby galaxies imply that they contain accreting black holes of ...
openaire   +2 more sources

Black holes

Surveys in High Energy Physics, 1976
Black ...
openaire   +1 more source

Black Holes

2009
Abstract A black hole is an object that is inside its event horizon at r=r*: a one-way surface that particles and light can only traverse inward. This chapter studies the spherically symmetric nonrotating Schwarzschild black hole. The metric elements change their respective signs when crossing from r>r∗ to r<r*, leading to ...
openaire   +1 more source

When is a black hole not a black hole?

New Scientist, 2019
When it's an astrophysical black hole, of course.
openaire   +1 more source