Pith. sign in

REVIEW 1 cited by

Specific Effect of Peculiar Velocities on Dark-Energy Constraints from Type Ia Supernovae

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2010.05765 v2 pith:J7YB2WPY submitted 2020-10-12 astro-ph.CO

classification astro-ph.CO
keywords sniaconstraintscosmologicaldark-energyeffectparameterparameterspeculiar
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

Peculiar velocities of type Ia supernova (SNIa) host galaxies affect the dark-energy parameter constraints in a small but very specific way: the parameters are biased in a single direction in parameter space that is a-priori knowable for a given SNIa dataset. We demonstrate the latter fact with a combination of inference from a cosmological N-body simulation with overwhelming statistics applied to the Pantheon SNIa data set, then confirm it by simple quantitative arguments. We quantify small modifications to the current analyses that would ensure that the effect of cosmological parameters is essentially guaranteed to be negligible.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Intrinsic Torsion, Extrinsic Torsion, and the Hubble Parameter

    gr-qc 2024-12 conditional novelty 5.0 of 10

    The second fundamental form of a spatial slice in a torsional spacetime is a sum of the Hubble term and an extrinsic torsion term, producing a negative bias in Hubble estimates when torsion is neglected.

Pith tools