Measuring cosmological distances using cluster edges as a standard ruler

ABSTRACT The line-of-sight velocity dispersion profile of galaxy clusters exhibits a ‘kink’ corresponding to the spatial extent of orbiting galaxies. Because the spatial extent of a cluster is correlated with the amplitude of the velocity dispersion profile, we can utilize this feature as a gravity-...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2021-06, Vol.504 (2), p.1619-1626
Hauptverfasser:	Wagoner, Erika L, Rozo, Eduardo, Aung, Han, Nagai, Daisuke
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplitudes Angular velocity Calibration Dark energy Distance measurement Error analysis Galactic clusters Galaxies Hubble constant Line of sight Sky surveys (astronomy) Uncertainty Velocity
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