distance modulus


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distance modulus

n
(Astronomy) astronomy a measure of the distance, r, of a celestial object too far away to show measurable parallax. It is given by mM = 5 log(r/10), where m is its apparent magnitude (corrected for interstellar absorption) and M is its absolute magnitude
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65 where the luminosity distance is expressed in Gly (billion light years) was obtained in [9] using the redshift adjusted distance modulus [1o] which is based on photon flux.
The luminosity distance is an important concept in cosmology as this is the distance measure obtained from supernovae data using the distance modulus.
L] in parsecs, is plotted as a function of redshift; while in the lower panel of Figure 3, the distance modulus difference between the measured SNeIa data and analytical results derived fromEq.
In the present study a redshift adjustment to the distance modulus was introduced.
As shown below the distance modulus gives a measure of LTDs and not Euclidean distances.
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