Sentence examples for luminosity relation from inspiring English sources

The problem for the class is the determination of distances to nearby galaxies using the Cepheid Period Luminosity relation: Ay97 Homework.

Finally, we discuss a simple model for the runaway growth of buoyant bubbles that is able to quantitatively account for the growth of the shock radius and predicts a critical luminosity relation.

That's called a period luminosity relation, which was discovered by an astronomer named Henrietta Leavitt.

Several luminosity relations currently exist for long gamma-ray bursts (GRBs).

In this study, we consider two of these luminosity relations: the time-lag, τlag, relation and the variability, V, relation and investigate their possible dependence on (or "evolution" with) the redshift, z.

Fig. 4. The redshift-FUV luminosity relations.

The Hubble Key Project measured Cepheids, stars with pulsating atmospheres that follow a period-luminosity relation, varying in brightness at regular intervals directly related to how much light they emit.

A possible flattening of the size-luminosity relation for C iv at high luminosity is suggested.

But the "redder-dimmer" color-luminosity relation widely used in cosmological SN Ia analyses confounds its two separate physical origins.

The CfA is celebrating the 100th anniversary of the discovery of the Cepheid period-luminosity relation on Nov 6 , 2008

This has been of paramount importance in calibrating the period-luminosity relation for Cepheids, and thus in determining the distance scale of the universe.