http://arxiv.org/abs/2208.14740
We put constraints on the peak absolute magnitude of type Ia supernova using the Pantheon sample for type Ia supernova observations and the cosmic chronometers data for the Hubble parameter by a model independent and non-parametric approach. Our analysis is based on the Gaussian process regression. We find percent level bounds on the peak absolute magnitude. For completeness and to check the consistency of the results, we also include the Baryon acoustic oscillation data and the prior of the comoving sound horizon from Planck 2018 cosmic microwave background observations. The inclusion of these two data gives tighter constraints on it at the sub-percent level. The mean values of peak absolute magnitude from all these data are consistent with each other and the values are approximately equal to -19.4.
B. Dinda and N. Banerjee
Thu, 1 Sep 22
26/68
Comments: 13 pages; 9 figures. Comments are welcome
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