New answers tagged absolute-magnitude
3
Neither. You use the Luminosity Distance.
$$M = m -5\log D_L + 5$$
This assumes bolometric magnitudes. If you are trying to estimate it in some photometric band then you must also calculate and apply a K-correction that will depend upon the intrinsic spectrum of the source.
For $z=11.09$ this cosmology calculator gives a model-dependent luminosity-distance ...
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