The evidence for cosmic acceleration attributed to dark energy originates from Type Ia supernova observationsthat assume the dataset is isotropic. A 2019 peer-reviewed reanalysis of the Joint Light-curve Analysis catalogueof 740 Type Ia supernovae (Colin, Mohayaee, Rameez and Sarkar, Astronomy & Astrophysics 631, L13) foundthat the deceleration parameter exhibits a significant dipole component of 3. 9-sigma statistical significancealigned with the CMB dipole direction, concluding that acceleration may be an artefact of observer bulk motionrather than evidence for dark energy. To the author's knowledge, this result has not been overturned or directlyrefuted in the subsequent peer-reviewed literature. This paper presents three lines of evidence in support of the bulk flow interpretation. First, a simulation-basedmechanism demonstration showing that observer bulk flow alone can generate a strong apparent directionaldipole signal in a clean synthetic Hubble-flow sample with no dark energy term, and that the signal vanisheswhen bulk flow is removed. Second, an independent directional analysis of the Pantheon+ supernova dataset (Brout et al. 2022) — the successor to the JLA catalogue — finding that low-redshift Pantheon+ subsetsconsistently prefer a dipole-extended fit over strict isotropy across all tested redshift cuts, using the officialcosmology selection and the full published STAT+SYS covariance matrix. Third, the persistent and growingHubble tension between independent H0 measurements, which is a direct prediction of the framework: differentmethodologies sampling different scales of a gravitationally sorted population return different effective values ofan emergent statistical relationship. The cosmological constant problem — the 10¹22 discrepancy between the quantum field theory prediction forvacuum energy and the observed value — is presented as an independent theoretical reason to seek analternative interpretation of Lambda. The author proposes that Lambda represents the energy density of thephysical substrate of space-time (the Spaticle field), giving rhoₛubstrate = Lambda c² / (8 pi G) approximately5. 9 x 10^-27 kg/m³ — within a factor of two of observed matter density and derived without free parameters. Afull hemispherical Colin-style replication of the Pantheon+ dataset is in preparation. This paper is a companion to the main Big Flare-Up Theory paper (DOI: 10. 5281/zenodo. 19149786) and to thegravitational sorting companion paper (DOI: 10. 5281/zenodo. 19226424).
V. K. Sharma (Thu,) studied this question.