[{"n": "Binary black hole", "u": "/e/black-holes/binary-black-hole/", "s": "Two black holes in close orbit, confirmed by gravitational waves."}, {"n": "Extremal black hole", "u": "/e/black-holes/extremal-black-hole/", "s": "Hypothetical black hole with minimum mass and zero temperature."}, {"n": "Intermediate-mass black hole", "u": "/e/black-holes/intermediate-mass-black-hole/", "s": "A class of black hole with mass between 100 and 100,000 solar masses."}, {"n": "Micro black hole", "u": "/e/black-holes/micro-black-hole/", "s": "Hypothetical tiny black holes where quantum effects dominate."}, {"n": "Accretion disk", "u": "/e/black-holes/accretion-disk/", "s": "Accretion disks are ubiquitous structures of orbiting material around massive bodies."}, {"n": "AdS black brane", "u": "/e/black-holes/ads-black-brane/", "s": "Einstein equation solution with planar event horizon and negative cosmological constant."}, {"n": "AdS black hole", "u": "/e/black-holes/ads-black-hole/", "s": "Black hole solution with negative cosmological constant, asymptotic to anti-de Sitter space."}, {"n": "Ansky (black hole)", "u": "/e/black-holes/ansky-black-hole/", "s": "First supermassive black hole observed awakening in real time."}, {"n": "Astrophysical jet", "u": "/e/black-holes/astrophysical-jet/", "s": "Bipolar streams of ionised matter expelled at high velocity."}, {"n": "Bekenstein bound", "u": "/e/black-holes/bekenstein-bound/", "s": "Upper limit on entropy in a finite region of space."}, {"n": "BKL singularity", "u": "/e/black-holes/bkl-singularity/", "s": "An anisotropic, chaotic model of the universe near the singularity."}, {"n": "Black brane", "u": "/e/black-holes/black-brane/", "s": "Extended, translationally symmetric solution of Einstein field equations."}, {"n": "Black hole bomb", "u": "/e/black-holes/black-hole-bomb/", "s": "Runaway amplification of bosonic fields around rotating black holes."}, {"n": "Black hole complementarity", "u": "/e/black-holes/black-hole-complementarity/", "s": "Conjectured solution to the black hole information paradox."}, {"n": "Black hole cosmology", "u": "/e/black-holes/black-hole-cosmology/", "s": "Model where our universe is inside a black hole."}, {"n": "Hawking radiation", "u": "/e/black-holes/black-hole-greybody-factors/", "s": "Theoretical radiation emitted by black holes due to quantum effects."}, {"n": "Black hole information paradox", "u": "/e/black-holes/black-hole-information-paradox/", "s": "A paradox questioning information loss in black hole evaporation."}, {"n": "Black Hole Initiative", "u": "/e/black-holes/black-hole-initiative/", "s": "Interdisciplinary center at Harvard focusing on black hole study."}, {"n": "Black hole ringdown spectroscopy", "u": "/e/black-holes/black-hole-ringdown-spectroscopy/", "s": "Method analyzing gravitational waves from settling black holes."}, {"n": "Black hole stability conjecture", "u": "/e/black-holes/black-hole-stability-conjecture/", "s": "Conjecture that perturbed black holes settle back to a black hole state."}, {"n": "Black hole thermodynamics", "u": "/e/black-holes/black-hole-thermodynamics/", "s": "A model linking black holes to thermodynamics via entropy and temperature."}, {"n": "Black star (semiclassical gravity)", "u": "/e/black-holes/black-star-semiclassical-gravity/", "s": "Theoretical alternative to black holes without an event horizon."}, {"n": "Blandford–Znajek process", "u": "/e/black-holes/blandford-znajek-process/", "s": "Mechanism for extracting energy from rotating black holes."}, {"n": "Bousso's holographic bound", "u": "/e/black-holes/bousso-s-holographic-bound/", "s": "Formulated the covariant entropy bound in theoretical physics."}, {"n": "Boyer–Lindquist coordinates", "u": "/e/black-holes/boyer-lindquist-coordinates/", "s": "Coordinates generalizing Schwarzschild metric for Kerr black holes."}, {"n": "BTZ black hole", "u": "/e/black-holes/btz-black-hole/", "s": "A (2+1)-dimensional black hole with negative cosmological constant."}, {"n": "Carter constant", "u": "/e/black-holes/carter-constant/", "s": "Conserved quantity for black hole motion in general relativity."}, {"n": "Cauchy horizon", "u": "/e/black-holes/cauchy-horizon/", "s": "Light-like boundary of a Cauchy problem's domain."}, {"n": "CENBOL", "u": "/e/black-holes/cenbol/", "s": "Model of hot boundary layer in black hole accretion flows."}, {"n": "Chandrasekhar–Page equations", "u": "/e/black-holes/chandrasekhar-page-equations/", "s": "Equations for spin-1/2 particles in rotating black hole spacetimes."}, {"n": "Supermassive black hole", "u": "/e/black-holes/supermassive-black-hole/", "s": "Supermassive black holes anchor the centers of most large galaxies."}, {"n": "Stellar black hole", "u": "/e/black-holes/stellar-black-hole/", "s": "Black hole formed by gravitational collapse of a star."}, {"n": "Oppenheimer–Snyder model", "u": "/e/black-holes/oppenheimer-snyder-model/", "s": "Model of stellar collapse into a black hole."}, {"n": "Naked singularity", "u": "/e/black-holes/naked-singularity/", "s": "A hypothetical singularity without an event horizon, potentially observable."}, {"n": "Kerr metric", "u": "/e/black-holes/kerr-metric/", "s": "Exact solution for rotating uncharged black holes."}, {"n": "Holographic principle", "u": "/e/black-holes/holographic-principle/", "s": "The universe may be a hologram encoded on a distant surface."}, {"n": "History of black hole physics", "u": "/e/black-holes/history-of-black-hole-physics/", "s": "From theoretical singularity to observed cosmic phenomenon."}, {"n": "Gravitational wave", "u": "/e/black-holes/gravitational-wave/", "s": "Ripples in spacetime carrying energy at light speed."}, {"n": "Gravitational collapse", "u": "/e/black-holes/gravitational-collapse/", "s": "Gravitational collapse shapes stars, remnants, and black holes."}, {"n": "Fuzzball (string theory)", "u": "/e/black-holes/fuzzball-string-theory/", "s": "Hypothetical string-theory objects replacing black hole singularities."}, {"n": "Primordial black hole", "u": "/e/black-holes/primordial-black-hole/", "s": "Hypothetical black holes formed moments after the Big Bang."}, {"n": "Extreme mass ratio inspiral", "u": "/e/black-holes/extreme-mass-ratio-inspiral/", "s": "A compact object spiraling into a supermassive black hole."}, {"n": "Event horizon", "u": "/e/black-holes/event-horizon/", "s": "A spacetime boundary from which no signal can escape."}, {"n": "Black holes in fiction", "u": "/e/black-holes/black-holes-in-fiction/", "s": "Black holes in fiction: hazards, time dilators, and cosmic gateways."}, {"n": "Black hole", "u": "/e/black-holes/black-hole/", "s": "An astronomical body from which nothing, not even light, can escape."}, {"n": "Little Red Dots", "u": "/e/black-holes/little-red-dots/", "s": "Enigmatic early-universe objects observed by the James Webb Space Telescope."}, {"n": "Non-expanding horizon", "u": "/e/black-holes/non-expanding-horizon/", "s": "Enclosed null surface with preserved intrinsic structure."}, {"n": "Gems of the Galaxy Zoos", "u": "/e/black-holes/gems-of-the-galaxy-zoos/", "s": "Citizen-science project imaging unusual galaxies with Hubble gap time."}, {"n": "Schwarzschild metric", "u": "/e/black-holes/schwarzschild-metric/", "s": "Exact solution to Einstein's equations for a spherical mass."}, {"n": "GW250114", "u": "/e/black-holes/gw250114/", "s": "Clearest gravitational wave signal, confirming Hawking's area theorem."}, {"n": "Photon sphere", "u": "/e/black-holes/photon-sphere/", "s": "Region of unstable circular photon orbits around a black hole."}, {"n": "Schwarzschild radius", "u": "/e/black-holes/schwarzschild-radius/", "s": "Radius defining the event horizon of a non-rotating black hole."}, {"n": "Direct collapse black hole", "u": "/e/black-holes/direct-collapse-black-hole/", "s": "Massive black hole seeds from direct gas collapse."}, {"n": "Mass inflation", "u": "/e/black-holes/mass-inflation/", "s": "Phenomenon of unbounded mass growth at a black hole's Cauchy horizon."}, {"n": "Quasi-star", "u": "/e/black-holes/quasi-star/", "s": "Hypothetical star powered by a central black hole."}, {"n": "No-hair theorem", "u": "/e/black-holes/no-hair-theorem/", "s": "Black holes are described by only three classical parameters."}, {"n": "Relativistic reflection", "u": "/e/black-holes/relativistic-reflection/", "s": "Light from a black hole's corona reflects off its accretion disk."}]