Document detail
ID
oai:arXiv.org:2412.19240
Topic
Astrophysics - Cosmology and Nonga...Author
Barua, Shubham Desai, ShantanuCategory
sciences: astrophysics
Year
2024
listing date
1/1/2025
Keywords
absolute magnitude peakAbstract
We apply data-motivated priors on the peak absolute magnitude of Type Ia supernovae ($M$), and on the sound horizon at the drag epoch ($r_d$), to study their impact on the Hubble tension, when compared to the Planck estimated value of the Hubble constant.
We use the data from Pantheon$+$, cosmic chronometers, and the latest DESI BAO results for this purpose.
We reaffirm the fact that there is a degeneracy between $M$ and $r_d$, and modifying the $r_d$ values to reconcile the Hubble tension also requires a change in the peak absolute magnitude $M$.
For certain $M$ and $r_d$ priors, the tension is found to reduce to as low as (1.2-2) $\sigma$.
;Comment: 8 pages, 1 figure
Barua, Shubham,Desai, Shantanu, 2024, Effect of Peak Absolute Magnitude of Type Ia Supernovae and Sound Horizon Values on Hubble Tension using DESI results
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