Term Index (Q)

Astrophysics (Index)

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Term Index (Q)

Q:
- chirp mass (M_c,ℳ): a reduced-mass-like quantity that relates to gravitational waves
- critical density (ρ_c): density of the universe which leaves it flat
- mass ratio (μ,q): ratio of masses of two objects such as a binary star
- rare designator prefixes: designator prefixes generally used for only a few objects
- Stokes parameters: means of describing a polarization state
- tidal Q: measure of orbital energy dissipated per orbit due to tidal forces
- Toomre Q parameter (Q): stability criterion for differentially rotating disks
Q band:
- infrared (IR): electromagnetic radiation, wavelength 0.74-300 micrometers
- mid infrared (MIR,mid-IR): infrared radiation with wavelengths in the 7.5-25 μm range
Q factor: measure of oscillator's damping
- tidal Q: measure of orbital energy dissipated per orbit due to tidal forces
Q parameter:
- Toomre Q parameter (Q): stability criterion for differentially rotating disks
q₀:
- critical density (ρ_c): density of the universe which leaves it flat
Qatar:
- Qatar Exoplanet Survey (QES): photometric survey in search of transients
Qatar Exoplanet Survey (QES): photometric survey in search of transients
Qatari:
- Qatar Exoplanet Survey (QES): photometric survey in search of transients
QCD:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
- quark matter (QM): matter not made of protons and neutrons but of quarks
QCD matter:
- quark matter (QM): matter not made of protons and neutrons but of quarks
QE:
- quantum efficiency (QE): measure of instrument's ability to sense EMR
QED:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
QES:
- Qatar Exoplanet Survey (QES): photometric survey in search of transients
QFT:
- fuzzy dark matter (FDM): concept of extremely light dark matter particles
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
QGP:
- quark-gluon plasma (QGP): extreme-temperature state of matter
QM:
- neutron star (NS): stellar remnant consisting entirely of solar masses of neutrons
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
- quark matter (QM): matter not made of protons and neutrons but of quarks
QMAP: mid 1990s balloon-based CMB survey
QMC:
- quantum Monte Carlo (QMC): MC approach to difficult quantum mechanical problems
QPO:
- quasi-periodic oscillation (QPO): type of flicker of some X-ray sources
QQ:
- rare designator prefixes: designator prefixes generally used for only a few objects
QQQ:
- rare designator prefixes: designator prefixes generally used for only a few objects
QRFH:
- quad-ridge flare horn (QRFH): type of horn that can be incorporated in radio telescope feeds
QRFH feed:
- quad-ridge flare horn (QRFH): type of horn that can be incorporated in radio telescope feeds
QRO:
- Queen's University Radio Observatory (QRO): early radio astronomy facility near Kingston, Ontario
QSG:
- quasar (QSO): distant, bright object that appears something like a star
QSO:
- quasar (QSO): distant, bright object that appears something like a star
QSO B1957+405:
- Cygnus A (3C 405,QSO B1957+405): early-discovered radio galaxy and quasar
QSR:
- quasar (QSO): distant, bright object that appears something like a star
QSS:
- quasar (QSO): distant, bright object that appears something like a star
QT1:
- QUIJOTE: survey to measure the polarization of the CMB
QT2:
- QUIJOTE: survey to measure the polarization of the CMB
quad-ridge flare horn (QRFH): type of horn that can be incorporated in radio telescope feeds
quadrapole:
- multipole expansion: series expansion of a function over the surface of a sphere
quadratic field strength: a measure of a star's varying magnetic field
quadrupole:
- multipole expansion: series expansion of a function over the surface of a sphere
quadrupole expansion:
- multipole expansion: series expansion of a function over the surface of a sphere
quadrupole formula:
- gravitational wave (GW): ripples in the curvature of spacetime propagating as a wave
quadrupole moment of mass:
- gravitational wave (GW): ripples in the curvature of spacetime propagating as a wave
quality factor:
- Q factor: measure of oscillator's damping
- tidal Q: measure of orbital energy dissipated per orbit due to tidal forces
quantum: minimal amount of something that triggers a reaction
quantum chromodynamics:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
- quark matter (QM): matter not made of protons and neutrons but of quarks
quantum computing:
- quantum: minimal amount of something that triggers a reaction
quantum degeneracy:
- degeneracy: general word meaning a violation of normal rules
quantum efficiency (QE): measure of instrument's ability to sense EMR
- photometry: studying starlight through bandpass filters
- photomultiplier tube (PMT): electronic device to detect light
quantum electrodynamics:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum field theory:
- fuzzy dark matter (FDM): concept of extremely light dark matter particles
- quantum fluctuations: short-lived particles popping up at random
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum fluctuation:
- Hawking radiation: EMR theorized to be emitted by black holes, powered by their mass
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum fluctuations: short-lived particles popping up at random
- black hole (BH): region of such high mass that light cannot escape
- cosmological simulation: simulation of the history of the universe
quantum gravity:
- graviton: quantum of gravity
quantum hydrodynamics:
- Madelung equations: quantum hydrodynamic equations
quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
- atomic excitation: atoms with electrons above the ground state
- Bose-Einstein condensate (BEC): rare state of matter possible at cryogenic temperatures
- Compton wavelength: lower bound on a particle's possible de Broglie wavelength
- conservation law: property that remains unchanged by physical phenomena
- de Broglie wavelength: wavelength of a particle's matter wave
- degeneracy: general word meaning a violation of normal rules
- degeneracy weight: number of quantum states with same energy level
- degree of ionization: fraction of material consisting of ions
- electron degeneracy: electrons set free of atoms by the Pauli exclusion principle
- electron orbital: a nucleus's "locations" where an electron can orbit
- false vacuum: apparent QM vacuum
- fine structure: separate spectral lines due to electron spin and relativistic effects
- forbidden line: lines that quantum mechanics disallows for the most part
- graviton: quantum of gravity
- Hamiltonian: mathematical transform useful in mechanics
- Heisenberg uncertainty principle: limit on observable position and momentum of an object
- hyperfine structure: spectral lines from magnetic and spin interactions between electrons and nucleus
- initial fluctuations: early universe density variations leading to current universe
- ion: non-neutral atom or molecule, with missing or extra electrons
- Madelung equations: quantum hydrodynamic equations
- metastable: characteristic of an excited state that lasts longer than typical
- oscillator strength: fraction expressing QM's contribution to the probability of absorption
- Pauli exclusion principle: fermions in a quantum system cannot have identical quantum numbers
- photon: quantum of light, i.e., light as a particle
- Planck constant (h): quantum of action in quantum mechanics
- quantum: minimal amount of something that triggers a reaction
- quantum fluctuations: short-lived particles popping up at random
- quantum mixing: means by which one particle spontaneously changes to another
- quantum number: number representing a conserved quantity
- quantum tunneling: quantum mechanical effect of particles passing through a barrier
- relativistic effect: a substantial fraction of the speed of light
- spin (m_s): an angular-momentum quantum number
- standard model: model of elementary particles including quarks
- state of excitation: energy level of something above the minimum
- state of ionization: difference in an ion's electron count versus proton count
- statistical mechanics: mechanical behavior based upon probability
quantum mixing: means by which one particle spontaneously changes to another
- neutralino: proposed type of particle that might include wimps
- supersymmetry (SUSY): extension to standard model of particle physics
quantum Monte Carlo (QMC): MC approach to difficult quantum mechanical problems
- Monte Carlo method: mathematics and simulation using random samples
quantum number: number representing a conserved quantity
quantum physics:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum state:
- degeneracy: general word meaning a violation of normal rules
- degeneracy weight: number of quantum states with same energy level
- partition function (Z): scale factor for Boltzmann factors
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum system:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum theory:
- quantum mechanics (QM): modern mechanical theory of small things, on the scale of atoms
quantum tunneling: quantum mechanical effect of particles passing through a barrier
quantum tunnelling:
- Heisenberg uncertainty principle: limit on observable position and momentum of an object
Quaoar:
- Kuiper Belt (K Belt,KB): further part of solar system beyond Neptune
quark: type of elementary particle incorporated in protons and neutrons
- baryon: protons, neutrons, and other three-quark particles
- exotic star: term for theoretical stars not made of atoms/ions
- particle: very small thing
- pion (π): first type of meson discovered
- quark matter (QM): matter not made of protons and neutrons but of quarks
- standard model: model of elementary particles including quarks
- supersymmetry (SUSY): extension to standard model of particle physics
quark matter (QM): matter not made of protons and neutrons but of quarks
- exotic star: term for theoretical stars not made of atoms/ions
- neutron degenerate matter: matter made up primarily of neutrons
- neutron star (NS): stellar remnant consisting entirely of solar masses of neutrons
- quark: type of elementary particle incorporated in protons and neutrons
quark star:
- exotic star: term for theoretical stars not made of atoms/ions
- quark matter (QM): matter not made of protons and neutrons but of quarks
quark-gluon plasma (QGP): extreme-temperature state of matter
quark-nova:
- neutron star (NS): stellar remnant consisting entirely of solar masses of neutrons
quarter-wave plate:
- waveplate: type of optical device that alters polarization
quasar (QSO): distant, bright object that appears something like a star
- 3C 273: first quasar discovered
- 3C 303: Seyfert galaxy
- 3C 48: radio galaxy/quasar
- 3C 9: first quasar discovered
- Cygnus A (3C 405,QSO B1957+405): early-discovered radio galaxy and quasar
- PG 1302-102: galaxy possibly with binary SMBH
quasar feedback:
- star formation feedback: mechanisms whereby star formation regulates its own rate
quasars:
- 2dF-SDSS LRG and QSO survey (2SLAQ): spectroscopic survey of distant galaxies
- active galactic nucleus (AGN): central region of a galaxy with extremely high luminosity
- Baryon Oscillation Spectroscopic Survey (BOSS): survey of spatial distribution of luminous red galaxies and quasars
- blazar: very compact variable quasar
- broad-line region (BLR): region in center of active galaxy where spectral lines are broad
- Canada-France High-z Quasar Survey (CFHQS): 2000s distant quasar survey
- deep field (DF): survey field subject to lengthy observation to identify distant galaxies
- deep survey: survey using lengthy observation to identify distant galaxies
- extragalactic astronomy: astronomy of other galaxies, galaxy clusters, AGNs, quasars, etc.
- Gunn-Peterson trough: spectral feature in EMR from redshift 6+
- Hamburg/ESO Survey (HE): 1990s southern hemisphere survey aimed at finding quasars
- Hewitt & Burbidge Catalog (HB87): optical catalog of quasi-stellar objects
- Large Bright QSO Survey (LBQS): 1980s quasar survey
- large quasar group (LQG): structure consisting of a collection of quasars
- NASA/IPAC Extragalactic Database (NED): a database of galaxies and other objects outside the Milky Way
- Roma-BZCAT: 2008 catalog of blazars
- Second Byurakan Survey (SBS): 1970s-1990s survey of galaxies and quasars
- Soltan argument: distant quasars imply SMBHs still exist
- submillimeter galaxy (SMG): galaxy that produces significant submillimeter radiation
quasi-periodic oscillation (QPO): type of flicker of some X-ray sources
quasi-star:
- exotic star: term for theoretical stars not made of atoms/ions
quasi-stellar galaxy:
- quasar (QSO): distant, bright object that appears something like a star
quasi-stellar object:
- quasar (QSO): distant, bright object that appears something like a star
quasi-stellar radio source:
- quasar (QSO): distant, bright object that appears something like a star
quasi-stellar source:
- quasar (QSO): distant, bright object that appears something like a star
Queen's University At Kingston:
- Queen's University Radio Observatory (QRO): early radio astronomy facility near Kingston, Ontario
Queen's University Radio Observatory (QRO): early radio astronomy facility near Kingston, Ontario
quench:
- star formation (SF): theorized collapse of gas and dust into stars
quenched galaxy: galaxy currently producing minimal stars
QUEST: sixteen square-degree survey camera
- LaSilla-QUEST Variability Survey (LSQ): survey for transients
quiescent:
- star formation (SF): theorized collapse of gas and dust into stars
- starburst galaxy: galaxy forming stars at a very high rate
quiescent galaxy:
- starburst galaxy: galaxy forming stars at a very high rate
quiescent phase:
- symbiotic binary (SS): giant star transferring mass to a somewhat distant companion
quiescent state:
- stellar flare: sudden brightening of a star
QUIJOTE: survey to measure the polarization of the CMB
QUIJOTE-CMB Telescopes:
- QUIJOTE: survey to measure the polarization of the CMB

Index