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Study reproduces environmental signal in peculiar velocities, suggesting a consistent cosmic influence.
This paper reports an independent replication of the Cosmicflows-4 environmental peculiar-velocity signal using the 6dFGSv survey. Across multiple statistical tests, galaxies in void-like environments are found to exhibit systematically larger peculiar-velocity amplitudes than galaxies in denser cosmic-web regions, strengthening the case for a reproducible environmental imprint in nearby peculiar-velocity fields.
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Alejandro Rey (2026) studied this question.
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