42,772 articles
Guy Bertrand (French chemist)
Guy Bertrand (born 1952) is a French chemist and Distinguished Professor at UC San Diego, known for preparing the first stable carbene in 1988 and for cyclic (alkyl)(amino)carbene chemistry.
Guy Brasseur
Guy Brasseur is a Belgian atmospheric and Earth-system scientist known for ozone research, who led NCAR's Atmospheric Chemistry Division and the Max Planck Institute for Meteorology.
Guy C. Lloyd‐Jones
Guy C. Lloyd-Jones FRS is a British physical organic chemist, Forbes Chair of Organic Chemistry at the University of Edinburgh, elected a Fellow of the Royal Society in 2013.
GW approximation
The GW approximation is a many-body perturbation method that computes quasiparticle energies and band structures as the product of a Green's function and a screened Coulomb interaction.
GW Ori
GW Ori (GW Orionis) is a young triple star system in Orion about 1,300 light-years away, surrounded by a rare circumtriple disk broken into three misaligned rings.
GW Vir
GW Vir, or GW Virginis, is the class of pulsating hot, hydrogen-deficient pre-white dwarf and white dwarf stars that vary in gravity modes with periods of minutes.
GW150914
GW150914 was the first direct detection of gravitational waves, a signal recorded by LIGO on September 14, 2015, produced by the merger of two black holes.
GW170814
GW170814 is a gravitational-wave signal from the merger of two stellar-mass black holes, detected on August 14, 2017 and the first observed by three detectors, LIGO Hanford, LIGO Livingston, and Virgo.
GW170817
GW170817 was a gravitational-wave signal from the merger of two neutron stars, detected by LIGO and Virgo on August 17, 2017, with light observed across the spectrum.
GW190412
GW190412 is a gravitational-wave signal from the merger of black holes of about 30 and 8 solar masses, detected on April 12, 2019 by LIGO and Virgo.
GW190521
GW190521 is a gravitational-wave signal from the merger of 85- and 66-solar-mass black holes, detected by LIGO and Virgo on 21 May 2019 and announced in 2020.
GW190814
GW190814 is a gravitational-wave signal detected by LIGO and Virgo on 14 August 2019 from a 23-solar-mass black hole merging with a 2.6-solar-mass compact object.
GW200105 and GW200115
GW200105 and GW200115 are the first two confirmed observations of neutron star-black hole binaries, detected by LIGO and Virgo in January 2020 with no light emitted.
GW230529_181500
GW230529_181500, abbreviated GW230529, is a gravitational-wave event detected by LIGO Livingston on 29 May 2023, likely a neutron star merging with a black hole in the lower mass gap.
GW231123
GW231123 is a gravitational-wave signal detected by the two LIGO observatories on 23 November 2023 from the most massive binary black hole merger yet observed, totaling 190 to 265 solar masses.
Gwan-Hyoung Lee
Gwan-Hyoung Lee (이관형) is a South Korean materials scientist and professor at Seoul National University known for research on 2D materials such as graphene, including the 2025 hypotaxy growth method.
Gwendal Feve
Gwendal Fève, born 1978, is a French condensed-matter physicist, professor at Sorbonne Université, known for founding electron quantum optics and the 2020 anyon statistics experiments.
GWTC-1
GWTC-1 (Gravitational-Wave Transient Catalog 1) is the first catalog of gravitational-wave detections from compact binary mergers, compiled by the LIGO and Virgo collaborations from observing runs covering 2015 to 2017.
GWTC-2
GWTC-2 (Gravitational-Wave Transient Catalog 2) is a catalog of 50 gravitational-wave detections of compact binary mergers made by LIGO and Virgo through the first half of their third observing run.
GWTC-3
GWTC-3, the third Gravitational-Wave Transient Catalog, is a 2021 catalog by the LIGO, Virgo, and KAGRA collaborations listing 90 gravitational-wave signals from merging compact binaries.
GX 339-4
GX 339-4, also cataloged as V821 Ara, is a recurrent black hole low-mass X-ray binary in the constellation Ara where a black hole pulls matter from a low-mass star.
György Hajós
György Hajós (1912–1972) was a Hungarian mathematician who worked in group theory, graph theory, and geometry, proving Minkowski's conjecture on lattice tilings of space by cubes in 1941.
Gypsum
Gypsum (CaSO4·2H2O), a soft sulfate mineral, is the most common sulfate mineral, deposited from evaporating seawater and best known as the raw material of plaster and wallboard.
Gyrochronology
Gyrochronology is the technique of estimating a star's age from its rotation period, exploiting the steady spin-down caused by magnetized winds; it works best for young to middle-aged stars.
Gyrokinetic simulation codes
Gyrokinetic simulation codes are large-scale programs that solve the nonlinear gyrokinetic equations to predict microturbulence and heat transport in tokamaks and stellarators, including ITER-scale plasmas.
Gyrokinetics
Gyrokinetics is a low-frequency expansion of plasma kinetic theory that averages out rapid cyclotron motion, the standard framework for studying turbulence in magnetized fusion plasmas.
Gyromagnetic ratio
The gyromagnetic ratio, or magnetogyric ratio, is the ratio of a particle's magnetic moment to its angular momentum, setting its spin precession rate in a magnetic field.
Gyroscope
A gyroscope is a spinning disk whose axis resists changes in direction, providing a fixed reference for navigation. Named by Léon Foucault in 1852, modern types include mechanical, ring-laser, fiber-optic, and MEMS gyroscopes.
Gyula Farkas (Hungarian physicist)
Gyula Farkas, also published as Julius Farkas (1847–1930), was a Hungarian mathematician and theoretical physicist, professor at the University of Kolozsvár, who proved Farkas's lemma, a theorem of linear inequalities central to optimization.
Gyula Kőnig
Gyula Kőnig, also known as Julius Kőnig, was a Hungarian mathematician at the Technical University of Budapest whose 1904 continuum hypothesis attempt yielded Kőnig's theorem.