Hemispherical analysis of Pantheon+ supernovae detects residual dipolar anisotropy in q0 (Δq0=0.112, S/N=2.155) even in the z_HD frame, reduced when using an SNe-inferred dipole, indicating possible unmodeled bulk flows.
Tsagas,The peculiar Jeans length,The European Physical Journal C81(2021) 753
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Comparing Hemispheres: Anisotropy in the deceleration parameter $q_0$
Hemispherical analysis of Pantheon+ supernovae detects residual dipolar anisotropy in q0 (Δq0=0.112, S/N=2.155) even in the z_HD frame, reduced when using an SNe-inferred dipole, indicating possible unmodeled bulk flows.