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{{Short description|Triplet of galaxies in the constellation Virgo}} | notes = Interacting galaxy triple ...

...the understanding of early galaxy formation and the formation of low mass galaxies. He has since led major infrared surveys using ground-based telescopes suc ...utilises 180 orbits of the [[Hubble Space Telescope]] to image over 8000 [[galaxies]] in the near [[infrared]]. This is currently{{when|date=May 2016}} the lar ...

...the dynamics of ''N''-body gravitating systems such as star clusters and [[galaxies]].<ref>{{cite journal | last1 = Gurzadyan | first1 = V.G. | last2 = Savvidy ...screening takes place. The 2-body relaxation mechanism e.g. for elliptical galaxies predicts around <math>10^{13}</math> years i.e. time scales exceeding the a ...

...]] on the order of 1 [[light year]]. Fuzzy cold dark matter halos in dwarf galaxies would manifest wave behavior on astrophysical scales, and the cusps would b ...ly ultralight axions, may better fit gravitational lens data than [[weakly interacting massive particle|WIMP]] dark matter.<ref name="Timmer 2023">{{cite web |las ...

...and [[dark energy]]. Each contributes to the theory of the origination of galaxies and the expansion of the universe. The universe must have a critical densit ...be modeled as a scalar field using two fitted parameters, mass and [[Self-interacting dark matter|self-interaction]].<ref>{{Cite journal |last1=Baldeschi |first1 ...

...Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies ...essentially trapped, unable to travel for any considerable distance before interacting with the plasma via [[Thomson scattering]].<ref name="ref:Dodelson"> ...

...y. They have been observed in the Milky Way's halo and within other nearby galaxies. ...s are probably spawned by interactions between the Milky Way and satellite galaxies, such as the [[Magellanic Clouds|Large and Small Magellanic Clouds]] (LMC a ...

...ected annihilation [[cross section (physics)|cross sections]] for [[weakly interacting massive particles]] (WIMPs).<ref>{{cite journal |last1=Steigman |first1=Gar ...er]] or [[galactic halo]], to [[galaxy cluster]]s, to [[Dwarf galaxy|dwarf galaxies]], depending on allowable energy range for each instrument.<ref name=":6" / ...

== Interacting theory == === Interacting Hamiltonian === ...

..., acting on circles and a distribution of ellipses similar to that of real galaxies. The distortion shown here is greatly exaggerated relative to real astrono ...e transformation]] that distorts the images of background objects (usually galaxies) near a foreground mass. The transformation can be split into two terms, t ...

...16697327}}</ref> Much closer black-hole binaries are likely in single-core galaxies with double emission lines. Examples include SDSS J104807.74+005543.5<ref n When two galaxies collide, the supermassive black holes at their centers are very unlikely to ...

...[[FLRW]] cosmological model, approximating the Universe as composed of non-interacting constituents, each one being [[Equation of state (cosmology)|a perfect flui ===Interacting with a cosmic horizon=== ...

...of gravity without requiring unseen dark matter. This concept explains why galaxies and clusters exhibit stronger-than-expected gravitational effects—gravity i ** As galaxies formed and clustered, mass damping increased, accelerating expansion withou ...

...re proposed by some researchers to explain the unexpected very large early galaxies discovered by the [[James Webb Space Telescope]] (JWST).<ref name="jwst1" / ...broadly [[platykurtic]] were evident from JWST observations of early large galaxies.<ref name="jwst"/><ref name="Bird"/> Recent analyses agree, suggesting a br ...

...es a modification of Newton's laws to account for observed properties of [[galaxies]]. Modifying [[Newton's law of gravity]] results in [[modified gravity]], w ...difies Newton's laws for extremely small accelerations which are common in galaxies and galaxy clusters. This provides a good fit to galaxy rotation curve data ...

...y|satellites]] as well as the internal kinematics of more distant [[Galaxy|galaxies]]. Measurement of the kinematics of stars in different subcomponents of the ...the influence of [[gravity]]. Stellar-dynamical models of systems such as galaxies or star clusters are often compared with or tested against stellar-kinemati ...

...gy]]), much less than the density of ordinary matter or dark matter within galaxies. However, it dominates the universe's mass–energy content because it is uni ...time and space, while scalar fields can vary. Yet other possibilities are interacting dark energy, an observational effect, and cosmological coupling (see the se ...

...|4.1}} Clouds of hydrogen collapsed very slowly to form stars and [[galaxy|galaxies]], so there were few sources of light and the emission from these sources w ...int around 200 to 500 million years, the earliest generations of stars and galaxies form (exact timings are still being researched), and early large structures ...

...ours reflect the absorption of the F115W and F150W fluxes of these distant galaxies by the intervening intergalactic medium.|thumb|[[JADES-GS-z13-0]] is the m Distances to remote objects, other than those in nearby galaxies, are nearly always inferred by measuring the [[cosmological redshift]] of t ...

...Status and Perspectives of Continuous Gravitational Wave Searches |journal=Galaxies |language=en |volume=10 |issue=3 |pages=72 |arxiv=2202.01088 |bibcode=2022G ...es of dark matter may also be detected by the interferometers directly, by interacting with optical elements of the device.<ref>{{Cite journal |last1=LIGO Scienti ...