Related to Hubbles constant:Hubble time,Hubble diagram Hubble's law n. An empirical law of observational cosmology stating that the velocities at which galaxies in the universe recede from one another is directly proportional to the distances between them. ...
Discusses the astronomical concept known as Hubble's constant, a measure of the rate at which the universe expands. Use of this constant to determine the age of the universe; Use of stars of standard brightness, such as the Cepheid variables.McDonald...
1)The Hubble Law shows that distant objects are receding from us at a rate proportional to their distance — which occurs when there is uniform expansion in all directions. This implies a history where everything was closer together. 2)The properties of the cosmic microwave background radiation ...
Time Delay in Gravitational Lenses: an Alternative Route to the Hubble Constant between these different images can lead to a determination of distances between the source, the lens and the observer and, thus, of the Hubble constant... P Magain - 《Journal of Pharmacology & Experimental Therapeut...
The Hubble constant. (cover story)Examines current determinations of the Hubble constant, a fundamental property of cosmology that sets both the scale and the expansion age of the universe. Description of the Hubble constant; How it is determined; Use in measurement of galaxy distances; Calibration...
While gravitational wave (GW) standard sirens from neutron star (NS) mergers have been proposed to offer good measurements of the Hubble constant, we show in this paper how a variation of the expanding photosphere method (EPM) or spectral-fitting expandi
I review the current state of determinations of the Hubble constant, which gives the length scale of the Universe by relating the expansion velocity of objects to their distance. In the last 20 years, much progress has been made and estimates now range between 60 and 75 km s1 Mpc1, with ...
Time-delay cosmography provides a one-step measurement of the Hubble constant (), independent of the local distance ladder or probes anchored with sound horizon physics, such as the cosmic microwave background (CMB). Almost a century after its first measurement, the Hubble constant still remains ...
For the quadruple gravitational lens PG 1115 + 080, we combine recent measurements of the time delays with new lens models to determine the Hubble constant H_0. We explore the effects of systematic uncertainties in the lens models on the estimates of H_0, and we discuss how the uncertainties...
Fig. 3: Hubble–Lemai^tre Diagram for the kilonova analysis. We plot distance modulus vs. redshift. The error bars indicate the extent of the posterior samples. The green dashed line showsΛCDM. We include a Hubble–Lemai^tre residual panel to show the residuals. ...